Chemistry Grade 9 Worksheet with Answers & Notes

States of matter (Kinetic theory and diffusion)

Subtopic

States of matter (Kinetic theory and diffusion) under Chemistry for Grade 9 IGCSE.

Preview questions (no answers)

1.
$Which of the following describes a physical change of state?$
A. $Iron rusting$
B. $Paper burning$
C. $Ice melting$
D. $Baking a cake$
2.
$Which process describes a gas changing to a solid without becoming a liquid?$
A. $Sublimation$
B. $Deposition$
C. $Freezing$
D. $Condensation$
3.
$The particles in a ________ move randomly and are very far apart.$
A. $Solid$
B. $Liquid$
C. $Gas$
D. $Crystal$
4.
$Which of the following properties is characteristic of a gas?$
A. $Very high density$
B. $Fixed shape$
C. $Ability to be compressed$
D. $Particles vibrate in fixed positions$
5.
$During the cooling of a gas to a liquid, what happens to the distance between particles?$
A. $It increases significantly.$
B. $It decreases significantly.$
C. $It remains the same.$
D. $It increases then decreases.$
6.
$Which of these gases has the lowest density at room temperature and pressure?$
A. $H_{2}$
B. $He$
C. $N_{2}$
D. $O_{2}$
7.
$What is the result of increasing the surface area of a liquid on its rate of evaporation?$
A. $The rate increases because more particles are at the surface to escape.$
B. $The rate decreases because the particles are more spread out.$
C. $The rate remains the same as long as the temperature is constant.$
D. $The rate increases because the particles gain more kinetic energy.$
8.
$300$
A. $The average speed of the particles decreases as the volume increases, which counteracts the effect of the temperature rise.$
B. $The particles hit the walls with more force, but the frequency of collisions per unit area decreases due to the larger volume.$
C. $The increase in temperature causes the particles to become smaller, allowing them to travel further between collisions.$
D. $The total number of collisions per second increases, but the surface area of the piston increases more rapidly.$
9.
$0\text{ K}$
A. $The volume of a gas becomes infinite.$
B. $The pressure of a gas becomes infinite.$
C. $All molecular motion ceases.$
D. $The particles turn into energy.$
10.
$Which observation directly supports the idea that matter is made of tiny, moving particles?$
A. $Solids have a fixed mass.$
B. $Liquids can be colored with dyes.$
C. $The smell of perfume spreads across a room.$
D. $Metals conduct electricity.$

Download the worksheet for Chemistry - States of matter (Kinetic theory and diffusion) to practice offline. It includes additional chapter-level practice questions.

Atoms, elements, and compounds (Atomic structure and bonding)

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Atoms, elements, and compounds (Atomic structure and bonding) under Chemistry for Grade 9 IGCSE.

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1.
$What is the smallest part of an element that can exist?$
A. $A molecule$
B. $A compound$
C. $An atom$
D. $A mixture$
2.
$What is the chemical symbol for Carbon?$
A. $Ca$
B. $Cr$
C. $C$
D. $Co$
3.
$Which of these is a typical physical property of most metals?$
A. $Poor conductor of heat$
B. $Brittle and easily broken$
C. $Good conductor of electricity$
D. $Dull appearance$
4.
$What is the chemical symbol for Phosphorus?$
A. $Ph$
B. $P$
C. $K$
D. $Po$
5.
$Which of these substances is a mixture?$
A. $Distilled water$
B. $Sodium chloride crystals$
C. $Air$
D. $Diamond$
6.
$N_2O_4$
A. $Nitrogen oxide$
B. $Dinitrogen tetroxide$
C. $Nitrogen(IV) oxide$
D. $Dinitrogen trioxide$
7.
$2^{nd}$
A. $2$
B. $6$
C. $8$
D. $16$
8.
$M$
A. $Group 13 (III)$
B. $Group 2 (II)$
C. $Group 15 (V)$
D. $Group 1 (I)$
9.
$Y$
A. $Covalent bonding$
B. $Ionic bonding$
C. $Metallic bonding$
D. $Dative bonding$
10.
$Which of the following identifies a coordinate bond?$
A. $A covalent bond where both electrons in the shared pair come from the same atom.$
B. $An ionic bond formed between two cations.$
C. $A metallic bond where electrons are shared between two atoms only.$
D. $A bond formed by the overlap of two partially filled orbitals.$

Download the worksheet for Chemistry - Atoms, elements, and compounds (Atomic structure and bonding) to practice offline. It includes additional chapter-level practice questions.

Stoichiometry (Formulae and the Mole concept)

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Stoichiometry (Formulae and the Mole concept) under Chemistry for Grade 9 IGCSE.

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Preview questions (no answers)

1.
$M_r$
A. $16$
B. $8$
C. $32$
D. $64$
2.
$What is the formula for percentage purity?$
A. $(Mass of pure substance / Total mass of sample) x 100$
B. $(Total mass of sample / Mass of pure substance) x 100$
C. $(Actual yield / Theoretical yield) x 100$
D. $(Ar / Mr) x 100$
3.
$Avogadro's Law states that equal volumes of all gases, at the same temperature and pressure, contain the same number of:$
A. $Protons$
B. $Neutrons$
C. $Molecules$
D. $Electrons$
4.
$What does the large number (coefficient) in front of a chemical formula in a balanced equation represent?$
A. $Number of atoms$
B. $Number of moles$
C. $The boiling point$
D. $The density$
5.
$Which of the following contains 0.5 moles of atoms?$
A. $H_2$
B. $O_2$
C. $N_2$
D. $C$
6.
$BaCl_2$
A. $10.4 g$
B. $20.8 g$
C. $17.25 g$
D. $5.2 g$
7.
$Ca(NO_3)_2$
A. $3$
B. $5$
C. $9$
D. $7$
8.
$0.20\text{ g}$
A. $50\text{ cm}^3$
B. $100\text{ cm}^3$
C. $200\text{ cm}^3$
D. $250\text{ cm}^3$
9.
$C_xH_yO_z$
A. $1$
B. $2$
C. $3$
D. $4$
10.
$K_2SO_4$
A. $0.05\text{ mol}$
B. $0.1\text{ mol}$
C. $0.2\text{ mol}$
D. $0.5\text{ mol}$

Download the worksheet for Chemistry - Stoichiometry (Formulae and the Mole concept) to practice offline. It includes additional chapter-level practice questions.

Electrochemistry (Electrolysis and electroplating)

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Electrochemistry (Electrolysis and electroplating) under Chemistry for Grade 9 IGCSE.

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1.
$Which statement about a simple cell (battery) is correct?$
A. $It uses electricity to produce a chemical reaction.$
B. $It converts chemical energy into electrical energy.$
C. $It requires an external power supply to work.$
D. $Both electrodes must be made of the same metal.$
2.
$What is the product at the anode during the electrolysis of molten calcium chloride?$
A. $Calcium metal$
B. $Chlorine gas$
C. $Oxygen gas$
D. $Hydrogen gas$
3.
$Which subatomic particles are responsible for carrying charge through an electrolyte?$
A. $Electrons$
B. $Protons$
C. $Ions$
D. $Neutrons$
4.
$During the electrolysis of molten aluminum oxide, where is the liquid aluminum metal collected?$
A. $At the top of the cell$
B. $At the bottom of the cell$
C. $On the surface of the anode$
D. $In a separate gas jar$
5.
$What is an advantage of using a fuel cell instead of a petrol engine to power a car?$
A. $Fuel cells produce more carbon dioxide.$
B. $Fuel cells are more efficient and produce only water as a byproduct.$
C. $Fuel cells are cheaper to manufacture.$
D. $Hydrogen is easier to store than petrol.$
6.
$Which statement about metallic conduction and electrolytic conduction is correct?$
A. $Metals conduct via ions, electrolytes conduct via electrons.$
B. $Both conduct via the movement of electrons.$
C. $Metals conduct via electrons, electrolytes conduct via ions.$
D. $Both conduct via the movement of atoms.$
7.
$In the electrolysis of concentrated aqueous sodium bromide, what is the main product at the anode?$
A. $Hydrogen$
B. $Oxygen$
C. $Sodium$
D. $Bromine$
8.
$What is the purpose of using a proton exchange membrane (PEM) in a fuel cell?$
A. $H^+$
B. $To allow electrons to flow through the center of the cell to complete the circuit.$
C. $To prevent the water byproduct from leaving the cell.$
D. $To act as a catalyst for the oxidation of hydrogen.$
9.
$A student wants to measure the relative reactivity of four metals (W, X, Y, Z). They set up cells with Copper as the other electrode. Which result indicates that metal X is the most reactive?$
A. $The cell with X produces the highest voltage with electrons flowing from X to Copper.$
B. $The cell with X produces the highest voltage with electrons flowing from Copper to X.$
C. $The cell with X produces the lowest voltage.$
D. $The cell with X shows no voltage.$
10.
$In the electrolysis of aqueous copper(II) sulfate with graphite electrodes, what is the observation in the solution over time?$
A. $Cu^{2+}$
B. $Cu^{2+}$
C. $The solution becomes cloudy due to the formation of copper(II) oxide.$
D. $The solution remains a constant shade of blue.$

Download the worksheet for Chemistry - Electrochemistry (Electrolysis and electroplating) to practice offline. It includes additional chapter-level practice questions.

Chemical energetics (Exothermic and Endothermic reactions)

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Chemical energetics (Exothermic and Endothermic reactions) under Chemistry for Grade 9 IGCSE.

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1.
$Which statement correctly pairs a reaction type with its temperature change?$
A. $Exothermic - Temperature drops$
B. $Endothermic - Temperature rises$
C. $Exothermic - Temperature rises$
D. $Neutralization - Temperature drops$
2.
$What is the term for a chemical reaction that can occur in both the forward and reverse directions?$
A. $Exothermic reaction$
B. $Endothermic reaction$
C. $Reversible reaction$
D. $Activation reaction$
3.
$If a reaction releases more energy when forming bonds than it takes to break them, it is:$
A. $Endothermic$
B. $Exothermic$
C. $A physical change$
D. $Cold to the touch$
4.
$Which of the following is true for the activation energy of a reaction?$
A. $It is only found in exothermic reactions$
B. $It is the energy released when products form$
C. $It is the energy required to start the reaction$
D. $It is equal to the enthalpy change$
5.
$E_a$
A. $E_a = 500\text{ kJ/mol}, \Delta H = +150\text{ kJ/mol}$
B. $E_a = 300\text{ kJ/mol}, \Delta H = -150\text{ kJ/mol}$
C. $E_a = 300\text{ kJ/mol}, \Delta H = +150\text{ kJ/mol}$
D. $E_a = 500\text{ kJ/mol}, \Delta H = +350\text{ kJ/mol}$
6.
$120\ kJ/mol$
A. $40\ kJ/mol$
B. $120\ kJ/mol$
C. $200\ kJ/mol$
D. $280\ kJ/mol$
7.
$When sulfuric acid is added to water, the mixture gets very hot. This process is:$
A. $Exothermic and chemical$
B. $Endothermic and physical$
C. $Exothermic and physical$
D. $Endothermic and chemical$
8.
$-100\ kJ$
A. $-150 kJ; Exothermic$
B. $+150 kJ; Endothermic$
C. $-350 kJ; Exothermic$
D. $+150 kJ; Exothermic$
9.
$25^{\circ}C$
A. $282.5 g$
B. $28.2 g$
C. $105.9 g$
D. $890 g$
10.
$2H_{2} + O_{2} \rightarrow 2H_{2}O$
A. $Breaking 2 H-H and 1 O=O bonds; Forming 4 O-H bonds.$
B. $Breaking 2 H-H and 2 O=O bonds; Forming 2 O-H bonds.$
C. $Breaking 1 H-H and 1 O=O bonds; Forming 2 O-H bonds.$
D. $Breaking 2 H-H and 1 O=O bonds; Forming 2 O-H bonds.$

Download the worksheet for Chemistry - Chemical energetics (Exothermic and Endothermic reactions) to practice offline. It includes additional chapter-level practice questions.

Chemical reactions (Rates of reaction and Reversible reactions)

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Chemical reactions (Rates of reaction and Reversible reactions) under Chemistry for Grade 9 IGCSE.

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1.
$A student is investigating the rate of reaction between a piece of magnesium ribbon and dilute hydrochloric acid. Which of the following observations would be the most suitable to measure how fast the reaction is occurring?$
A. $The time taken for a white precipitate to form in the flask$
B. $The change in color of the solution from colorless to blue$
C. $The time taken for the magnesium ribbon to be completely used up$
D. $The time taken for the liquid in the flask to turn into a gas$
2.
$Which of the following metals would react most vigorously when placed in cold water?$
A. $Copper$
B. $Iron$
C. $Magnesium$
D. $Potassium$
3.
$What characterizes an endothermic reaction?$
A. $It releases heat energy to the surroundings$
B. $It absorbs heat energy from the surroundings$
C. $It only occurs in the dark$
D. $It happens instantly without any energy$
4.
$Which of the following changes will decrease the rate of a chemical reaction?$
A. $Adding a catalyst$
B. $Increasing the concentration$
C. $Decreasing the temperature$
D. $Increasing the surface area$
5.
$2H_2O_2 \rightarrow 2H_2O + O_2$
A. $Reactant$
B. $Product$
C. $Catalyst$
D. $Solvent$
6.
$Which of the following equations is balanced correctly for a neutralization reaction?$
A. $H_2SO_4 + NaOH \rightarrow NaSO_4 + H_2O$
B. $H_2SO_4 + 2NaOH \rightarrow Na_2SO_4 + 2H_2O$
C. $2H_2SO_4 + NaOH \rightarrow Na_2SO_4 + 2H_2O$
D. $H_2SO_4 + NaOH \rightarrow Na_2SO_4 + H_2O$
7.
$What defines a 'disproportionation' reaction (a specific type of redox)?$
A. $Two different elements are oxidized simultaneously.$
B. $The same element is both oxidized and reduced.$
C. $The reaction involves no transfer of electrons.$
D. $A metal displaces a less reactive metal from its salt.$
8.
$0.5 mol$
A. $100%$
B. $50%$
C. $80%$
D. $25%$
9.
$XeF_4 + 2H_2O \rightarrow Xe + 4HF + O_2$
A. $Xenon$
B. $Oxygen$
C. $Fluorine$
D. $Hydrogen$
10.
$2H_2 + O_2 \rightarrow 2H_2O$
A. $O-H$
B. $H-H$
C. $Bond breaking is exothermic and bond forming is endothermic.$
D. $The total number of bonds on the reactant side is greater than on the product side.$

Download the worksheet for Chemistry - Chemical reactions (Rates of reaction and Reversible reactions) to practice offline. It includes additional chapter-level practice questions.

Acids, bases, and salts (pH scale and preparation of salts)

Subtopic

Acids, bases, and salts (pH scale and preparation of salts) under Chemistry for Grade 9 IGCSE.

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Preview questions (no answers)

1.
$What is the pH of a solution formed by dissolving sodium oxide in water?$
A. $pH 2$
B. $pH 5$
C. $pH 7$
D. $pH 12$
2.
$Which acid is found in citrus fruits like oranges?$
A. $Sulfuric acid$
B. $Citric acid$
C. $Hydrochloric acid$
D. $Nitric acid$
3.
$Which of these reacts with an acid to produce a salt and hydrogen gas?$
A. $Metal hydroxide$
B. $Metal oxide$
C. $Reactive metal$
D. $Non-metal$
4.
$Which pH value is most likely for a solution of ammonia?$
A. $1$
B. $4$
C. $7$
D. $11$
5.
$Which of these bases is considered an alkali because it is soluble in water?$
A. $Copper(II) hydroxide$
B. $Iron(III) hydroxide$
C. $Barium hydroxide$
D. $Aluminum hydroxide$
6.
$0.1 mol/dm^3$
A. $0$
B. $2$
C. $3$
D. $4$
7.
$Iron reacts with dilute hydrochloric acid. What are the products of this reaction?$
A. $Iron(II) chloride and hydrogen$
B. $Iron(III) chloride and water$
C. $Iron(II) oxide and chlorine$
D. $Iron(III) hydroxide and hydrogen$
8.
$A solid mixture contains two different salts. A student performs the tests shown in the flowchart to identify the components of the mixture. Based on the observations, which pair of salts was present in the original mixture?$
A. $MgCO_{3}$
B. $CuCO_{3}$
C. $CaCO_{3}$
D. $CuSO_{4}$
9.
$20.0\text{ cm}^{3}$
A. $Sodium hydroxide$
B. $Potassium hydroxide$
C. $Lithium hydroxide$
D. $All of the above$
10.
$0.1\text{ mol/dm}^{3}$
A. $pH$
B. $NaOH$
C. $NH_{3}(aq)$
D. $0.1\text{ mol/dm}^{3}$

Download the worksheet for Chemistry - Acids, bases, and salts (pH scale and preparation of salts) to practice offline. It includes additional chapter-level practice questions.

The Periodic Table (Group properties and Transition elements)

Subtopic

The Periodic Table (Group properties and Transition elements) under Chemistry for Grade 9 IGCSE.

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Preview questions (no answers)

1.
$Which of the following elements will form an acidic oxide?$
A. $Sodium$
B. $Magnesium$
C. $Sulfur$
D. $Calcium$
2.
$What is the trend in density for Group 1 metals as you go down the group?$
A. $Generally increases$
B. $Generally decreases$
C. $Stays the same$
D. $Decreases then increases$
3.
$Which non-metal is a good conductor of electricity?$
A. $Sulfur$
B. $Diamond$
C. $Graphite$
D. $Phosphorus$
4.
$How many electrons does a Magnesium atom (Group 2) lose to form a stable ion?$
A. $1$
B. $2$
C. $3$
D. $7$
5.
$Aluminum oxide is described as 'amphoteric'. What does this mean?$
A. $It reacts only with acids.$
B. $It reacts only with bases.$
C. $It reacts with both acids and bases.$
D. $It does not react with either acids or bases.$
6.
$Why does the reactivity of Group 1 metals increase as you go down the group?$
A. $The outer electron is further from the nucleus and less strongly attracted.$
B. $The nucleus becomes smaller and loses its pull.$
C. $The number of valence electrons increases.$
D. $The atoms become more electronegative.$
7.
$As you move from left to right across Period 3, how does the character of the elements change?$
A. $From non-metal to metal$
B. $From gas to solid$
C. $From metallic to non-metallic$
D. $From acidic to basic$
8.
$Which of the following is true for all elements in Group 18?$
A. $They have 8 electrons in their outer shell.$
B. $They are diatomic gases at room temperature.$
C. $They have a stable electronic configuration.$
D. $They form ionic compounds with Group 1 metals.$
9.
$In the context of the Periodic Table, why is Argon used in the Shielded Metal Arc Welding (TIG) process?$
A. $It reacts with the metal to form a protective layer.$
B. $It is an inert gas that prevents the hot metal from reacting with oxygen in the air.$
C. $It provides the electrons necessary for the arc to form.$
D. $It lowers the temperature of the weld to prevent cracking.$
10.
$Which set of elements is arranged in order of increasing metallic character?$
A. $Be, Mg, Ca$
B. $F, Cl, Br$
C. $Si, P, S$
D. $Al, Mg, Na$

Download the worksheet for Chemistry - The Periodic Table (Group properties and Transition elements) to practice offline. It includes additional chapter-level practice questions.

Metals (Properties, extraction, and reactivity series)

Subtopic

Metals (Properties, extraction, and reactivity series) under Chemistry for Grade 9 IGCSE.

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Preview questions (no answers)

1.
$Which of the following is an example of a transition metal?$
A. $Calcium$
B. $Sodium$
C. $Iron$
D. $Magnesium$
2.
$Which metal is the most abundant in the Earth's crust?$
A. $Iron$
B. $Aluminum$
C. $Copper$
D. $Gold$
3.
$Which substance is added to the blast furnace to provide the carbon required for reduction?$
A. $Limestone$
B. $Coke$
C. $Hematite$
D. $Quartz$
4.
$2+$
A. $Sodium$
B. $Potassium$
C. $Magnesium$
D. $Aluminum$
5.
$Which of the following is true about the reaction of transition metals with water?$
A. $They react violently with cold water.$
B. $They react slowly or not at all with cold water.$
C. $They produce lilac flames when they react.$
D. $They form strongly alkaline solutions immediately.$
6.
$What happens when a piece of zinc is placed in a solution of magnesium sulfate?$
A. $Zinc displaces magnesium and the solution turns cloudy.$
B. $The zinc dissolves and hydrogen gas is evolved.$
C. $No reaction occurs because magnesium is more reactive than zinc.$
D. $A magnesium coating forms on the zinc.$
7.
$Which transition metal compound is commonly used as a catalyst in the Contact Process for making sulfuric acid?$
A. $Manganese(IV) oxide$
B. $Vanadium(V) oxide$
C. $Iron filings$
D. $Copper(II) sulfate$
8.
$What is the main reason for adding limestone to the blast furnace during the extraction of iron?$
A. $To act as a reducing agent for the iron ore.$
B. $To react with the sandy impurities to form slag.$
C. $To provide oxygen for the combustion of coke.$
D. $To lower the melting point of the iron produced.$
9.
$If a more reactive metal is used as an electrode in a cell with a less reactive metal, the more reactive metal will:$
A. $Gain electrons and be reduced.$
B. $Lose electrons and be oxidized.$
C. $Remain unchanged as it is a catalyst.$
D. $Act as the cathode.$
10.
$Which metal is typically extracted from the ore 'Hematite'?$
A. $Copper$
B. $Aluminium$
C. $Zinc$
D. $Iron$

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Chemistry of the Environment

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Chemistry of the Environment under Chemistry for Grade 9 IGCSE.

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Preview questions (no answers)

1.
$What is the major difference between distilled water and tap water?$
A. $Distilled water contains more dissolved salts$
B. $Distilled water contains fewer impurities and dissolved ions$
C. $H_2O$
D. $Distilled water is naturally found in rivers$
2.
$Why is nitrogen gas relatively unreactive under normal conditions?$
A. $It has a very weak single bond$
B. $It is a noble gas$
C. $It has a very strong triple bond between its atoms$
D. $It is very light$
3.
$Which of these is classified as a fossil fuel?$
A. $Wood$
B. $Coal$
C. $Uranium$
D. $Hydrogen$
4.
$Which pollutant is formed from the reaction of nitrogen oxides and unburnt hydrocarbons in the presence of sunlight?$
A. $Photochemical smog$
B. $Acid rain$
C. $Carbon dioxide$
D. $Methane$
5.
$What happens to the solubility of carbon dioxide in water as the temperature of the water increases?$
A. $The solubility increases.$
B. $The solubility decreases.$
C. $The solubility remains constant.$
D. $Carbon dioxide becomes completely insoluble.$
6.
$Which gas is the most abundant in the Earth's atmosphere?$
A. $Oxygen$
B. $Carbon dioxide$
C. $Nitrogen$
D. $Argon$
7.
$What is the primary role of the ozone layer in the upper atmosphere?$
A. $To trap heat and keep the Earth warm$
B. $To provide oxygen for high-altitude birds$
C. $To absorb harmful ultraviolet (UV) radiation from the Sun$
D. $To react with and remove carbon dioxide$
8.
$A student sets up an experiment to investigate the conditions for rusting. Tube 1 contains iron nails and boiled distilled water covered with a layer of oil. Tube 2 contains iron nails and dry air (with anhydrous calcium chloride). Tube 3 contains iron nails and tap water. In which tube(s) will rusting occur?$
A. $Tube 3 only$
B. $Tube 1 and Tube 3$
C. $Tube 2 and Tube 3$
D. $Tube 1, 2, and 3$
9.
$N_2$
A. $NO$
B. $NO_2$
C. $N_2O$
D. $NH_3$
10.
$Which of the following describes a 'carbon-neutral' process?$
A. $CO_2$
B. $No carbon-containing compounds are used at any stage of the process.$
C. $CO_2$
D. $The process is powered entirely by nuclear energy which produces no carbon.$

Download the worksheet for Chemistry - Chemistry of the Environment to practice offline. It includes additional chapter-level practice questions.

Organic Chemistry

Subtopic

Organic Chemistry under Chemistry for Grade 9 IGCSE.

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Preview questions (no answers)

1.
$What is the name of the process that converts ethene into ethanol by adding water?$
A. $Hydrogenation$
B. $Hydration$
C. $Dehydration$
D. $Oxidation$
2.
$Which of the following represents the molecular formula of methanol?$
A. $CH_3OH$
B. $C_2H_5OH$
C. $C_3H_7OH$
D. $CH_4$
3.
$Which of these statements about polymers is true?$
A. $They are always small molecules$
B. $They are made of many repeating units$
C. $They are only found in nature$
D. $They cannot be man-made$
4.
$In the naming of organic compounds, what does the suffix '-one' usually indicate? (Note: Although less common in IGCSE core, it is a basic naming rule)$
A. $An alcohol$
B. $An alkene$
C. $A ketone$
D. $An alkane$
5.
$Which description identifies an ester?$
A. $-COOH$
B. $-OH$
C. $-COO-$
D. $A compound consisting of only carbon and hydrogen$
6.
$What is the name of the alcohol with four carbon atoms where the -OH group is on the second carbon?$
A. $Butan-1-ol$
B. $Butan-2-ol$
C. $2-methylpropan-1-ol$
D. $Propan-2-ol$
7.
$Which of the following formulas represents a saturated hydrocarbon?$
A. $C_{2}H_{4}$
B. $C_{3}H_{6}$
C. $C_{4}H_{10}$
D. $C_{5}H_{10}$
8.
$X$
A. $Ethanol$
B. $Propanol$
C. $Butanol$
D. $Pentanol$
9.
$What is the molar mass of the repeating unit in the polymer poly(propene)?$
A. $28 g/mol$
B. $42 g/mol$
C. $56 g/mol$
D. $70 g/mol$
10.
$Which of the following would be the product of the reaction between propene and chlorine gas in the dark at room temperature?$
A. $1-chloropropane$
B. $2-chloropropane$
C. $1,2-dichloropropane$
D. $1,3-dichloropropane$

Download the worksheet for Chemistry - Organic Chemistry to practice offline. It includes additional chapter-level practice questions.

Experimental Techniques and Chemical Analysis

Subtopic

Experimental Techniques and Chemical Analysis under Chemistry for Grade 9 IGCSE.

About Topic & Revision

Preview questions (no answers)

1.
$A student is identifying an unknown gas produced during a chemical reaction. They follow the procedure and observe the result shown in the flowchart below. Which gas is being tested?$
A. $N_2$
B. $O_2$
C. $CO_2$
D. $H_2$
2.
$Which method is safest for heating a flammable liquid like ethanol?$
A. $Directly over a Bunsen burner flame$
B. $Using a water bath$
C. $Inside a sealed container$
D. $On a wooden block$
3.
$Which of the following ions produces a grey-green precipitate when aqueous sodium hydroxide is added?$
A. $Chromium(III)$
B. $Iron(II)$
C. $Iron(III)$
D. $Copper(II)$
4.
$In chromatography, if a substance is very soluble in the mobile phase, where will it be found on the paper?$
A. $At the bottom, near the baseline$
B. $Halfway up the paper$
C. $Near the top, close to the solvent front$
D. $It will not move at all$
5.
$Which gas is removed from liquid air at the lowest temperature during fractional distillation?$
A. $Oxygen$
B. $Nitrogen$
C. $Argon$
D. $Helium$
6.
$A solution forms a white precipitate with aqueous ammonia that dissolves when excess ammonia is added to form a colorless solution. Which cation is present?$
A. $Al^{3+}$
B. $Zn^{2+}$
C. $Ca^{2+}$
D. $Pb^{2+}$
7.
$A student adds silver nitrate solution to a sample. A white precipitate forms that is insoluble in dilute nitric acid. Which ion is likely present?$
A. $Br^-$
B. $I^-$
C. $Cl^-$
D. $SO_4^{2-}$
8.
$Which of the following gases can be collected by the downward displacement of air but not by the displacement of water?$
A. $Hydrogen chloride$
B. $Hydrogen$
C. $Oxygen$
D. $Methane$
9.
$A mixture of ammonium chloride and barium sulfate is given. Which method is most effective for obtaining pure samples of both solids?$
A. $Heat the mixture to sublimate the ammonium chloride, then collect the residue.$
B. $Dissolve in water, filter to collect barium sulfate, then evaporate the filtrate.$
C. $Dissolve in ethanol and filter.$
D. $Use a magnet to remove the barium sulfate.$
10.
$Fe^{3+}$
A. $Add excess aqueous sodium hydroxide and filter; the iron(III) hydroxide stays as a residue.$
B. $Add excess aqueous ammonia and filter; the aluminum hydroxide stays as a residue.$
C. $Add dilute hydrochloric acid; the iron(III) will precipitate.$
D. $Perform a flame test; the aluminum will color the flame.$

Download the worksheet for Chemistry - Experimental Techniques and Chemical Analysis to practice offline. It includes additional chapter-level practice questions.

Ions and Ionic Bonds

Subtopic

Ions and Ionic Bonds under Chemistry for Grade 9 IGCSE.

About Topic & Revision

Preview questions (no answers)

1.
1. Ions and Ionic Bonds: practice question 1 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
2.
1. Ions and Ionic Bonds: practice question 2 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
3.
1. Ions and Ionic Bonds: practice question 3 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
4.
1. Ions and Ionic Bonds: practice question 4 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
5.
1. Ions and Ionic Bonds: practice question 5 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
6.
1. Ions and Ionic Bonds: practice question 6 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
7.
1. Ions and Ionic Bonds: practice question 7 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
8.
1. Ions and Ionic Bonds: practice question 8 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
9.
1. Ions and Ionic Bonds: practice question 9 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
10.
1. Ions and Ionic Bonds: practice question 10 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$

Download the worksheet for Chemistry - Ions and Ionic Bonds to practice offline. It includes additional chapter-level practice questions.

Simple Molecules and Covalent Bonds

Subtopic

Simple Molecules and Covalent Bonds under Chemistry for Grade 9 IGCSE.

About Topic & Revision

Preview questions (no answers)

1.
$O_2$
A. $The covalent bonds between the atoms are very weak$
B. $The molecules have a giant lattice structure$
C. $They contain many delocalized electrons$
D. $The intermolecular forces between the molecules are weak$
2.
$How many electrons are shared between two atoms in a single covalent bond?$
A. $2$
B. $1$
C. $4$
D. $6$
3.
$Which substance is an example of a simple covalent molecule?$
A. $NaCl$
B. $MgO$
C. $CH_4$
D. $Fe$
4.
$Which of the following best describes a covalent bond?$
A. $The electrostatic attraction between oppositely charged ions$
B. $A sharing of a pair of electrons between two non-metal atoms$
C. $A transfer of electrons from a metal atom to a non-metal atom$
D. $A sea of delocalized electrons moving through a lattice of metal ions$
5.
$NH_3$
A. $Linear$
B. $Pyramidal$
C. $Tetrahedral$
D. $Bent$
6.
$Which of the following diatomic molecules contains a triple covalent bond?$
A. $H_2$
B. $O_2$
C. $N_2$
D. $Cl_2$
7.
$C_2H_5OH$
A. $They do not have any mobile ions or delocalized electrons$
B. $Their molecules are held together by very strong covalent bonds$
C. $The molecules are too large to move through the liquid$
D. $They only exist as gases at room temperature$
8.
$H_2O$
A. $The covalent bonds between the hydrogen and oxygen atoms are broken$
B. $The molecules decompose into hydrogen gas and oxygen gas$
C. $The covalent bonds vibrate faster until the atoms separate$
D. $The weak intermolecular forces between the water molecules are overcome$
9.
$Element X is in Group 15 (Group 5) and Element Y is in Group 17 (Group 7) of the Periodic Table. What is the most likely formula for the simple covalent compound formed between X and Y?$
A. $XY_3$
B. $X_3Y$
C. $XY$
D. $X_5Y_7$
10.
1. Simple Molecules and Covalent Bonds: practice question 1 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$

Download the worksheet for Chemistry - Simple Molecules and Covalent Bonds to practice offline. It includes additional chapter-level practice questions.

Redox

Subtopic

Redox under Chemistry for Grade 9 IGCSE.

About Topic & Revision

Preview questions (no answers)

1.
1. Redox: practice question 1 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
2.
1. Redox: practice question 2 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
3.
1. Redox: practice question 3 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
4.
1. Redox: practice question 4 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
5.
1. Redox: practice question 5 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
6.
1. Redox: practice question 6 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
7.
1. Redox: practice question 7 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
8.
1. Redox: practice question 8 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
9.
1. Redox: practice question 9 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
10.
1. Redox: practice question 10 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$

Download the worksheet for Chemistry - Redox to practice offline. It includes additional chapter-level practice questions.

Oxides

Subtopic

Oxides under Chemistry for Grade 9 IGCSE.

About Topic & Revision

Preview questions (no answers)

1.
$Which of the following oxides is a basic oxide that reacts with dilute sulfuric acid to form a salt and water, but does not react with aqueous bases?$
A. $CO_{2}$
B. $CaO$
C. $Al_{2}O_{3}$
D. $SO_{2}$
2.
$Which statement describes the general trend in the chemical nature of element oxides as you move from left to right across Period 3 of the Periodic Table (from Sodium to Chlorine)?$
A. $They change from basic to acidic$
B. $They change from acidic to basic$
C. $They change from neutral to basic$
D. $They remain amphoteric throughout the period$
3.
$CO$
A. $SO_{2}$
B. $SO_{2}$
C. $Both gases are acidic oxides that turn damp blue litmus paper red$
D. $Both gases are neutral oxides that have no effect on indicators$
4.
$X$
A. $Magnesium$
B. $Sulfur$
C. $Zinc$
D. $Phosphorus$
5.
$G$
A. $MgO$
B. $P_{4}O_{10}$
C. $Al_{2}O_{3}$
D. $N_{2}O$
6.
1. Oxides: practice question 1 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
7.
1. Oxides: practice question 2 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
8.
1. Oxides: practice question 3 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
9.
1. Oxides: practice question 4 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
10.
1. Oxides: practice question 5 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$

Download the worksheet for Chemistry - Oxides to practice offline. It includes additional chapter-level practice questions.

Noble Gases

Subtopic

Noble Gases under Chemistry for Grade 9 IGCSE.

About Topic & Revision

Preview questions (no answers)

1.
1. Noble Gases: practice question 1 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
2.
1. Noble Gases: practice question 2 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
3.
1. Noble Gases: practice question 3 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
4.
1. Noble Gases: practice question 4 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
5.
1. Noble Gases: practice question 5 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
6.
1. Noble Gases: practice question 6 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
7.
1. Noble Gases: practice question 7 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
8.
1. Noble Gases: practice question 8 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
9.
1. Noble Gases: practice question 9 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
10.
1. Noble Gases: practice question 10 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$

Download the worksheet for Chemistry - Noble Gases to practice offline. It includes additional chapter-level practice questions.

Water

Subtopic

Water under Chemistry for Grade 9 IGCSE.

About Topic & Revision

Preview questions (no answers)

1.
1. Water: practice question 1 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
2.
1. Water: practice question 2 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
3.
1. Water: practice question 3 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
4.
1. Water: practice question 4 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
5.
1. Water: practice question 5 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
6.
1. Water: practice question 6 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
7.
1. Water: practice question 7 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
8.
1. Water: practice question 8 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
9.
1. Water: practice question 9 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
10.
1. Water: practice question 10 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$

Download the worksheet for Chemistry - Water to practice offline. It includes additional chapter-level practice questions.

Air Quality and Climate

Subtopic

Air Quality and Climate under Chemistry for Grade 9 IGCSE.

About Topic & Revision

Preview questions (no answers)

1.
1. Air Quality and Climate: practice question 1 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
2.
1. Air Quality and Climate: practice question 2 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
3.
1. Air Quality and Climate: practice question 3 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
4.
1. Air Quality and Climate: practice question 4 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
5.
1. Air Quality and Climate: practice question 5 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
6.
1. Air Quality and Climate: practice question 6 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
7.
1. Air Quality and Climate: practice question 7 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
8.
1. Air Quality and Climate: practice question 8 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
9.
1. Air Quality and Climate: practice question 9 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
10.
1. Air Quality and Climate: practice question 10 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$

Download the worksheet for Chemistry - Air Quality and Climate to practice offline. It includes additional chapter-level practice questions.

Terminology

Subtopic

Terminology under Chemistry for Grade 9 IGCSE.

About Topic & Revision

Preview questions (no answers)

1.
$What is the name for the electrons in the outermost shell of an atom?$
A. $Core electrons$
B. $Valence electrons$
C. $Static electrons$
D. $Inner electrons$
2.
$Which technique is used to separate different colored dyes?$
A. $Filtration$
B. $Distillation$
C. $Chromatography$
D. $Evaporation$
3.
$What is the term for a positively charged ion?$
A. $Anion$
B. $Cation$
C. $Electron$
D. $Neutron$
4.
$What is the chemical symbol for Sodium?$
A. $S$
B. $So$
C. $Na$
D. $Sn$
5.
$What is the term for the bonding in metals where positive ions are surrounded by a 'sea' of delocalised electrons?$
A. $Ionic bonding$
B. $Covalent bonding$
C. $Metallic bonding$
D. $Molecular bonding$
6.
$Which term describes the process of a liquid turning into a gas at its boiling point?$
A. $Evaporation$
B. $Vaporisation$
C. $Condensation$
D. $Melting$
7.
$What is the term for a group of atoms held together by covalent bonds?$
A. $Crystal lattice$
B. $Molecule$
C. $Ionic compound$
D. $Element$
8.
$In the contact process, what is the role of 'Vanadium(V) oxide'?$
A. $It acts as a reactant to produce sulfur trioxide.$
B. $It acts as a catalyst to increase the rate of the reversible reaction.$
C. $It is used to dehydrate sulfuric acid to make it concentrated.$
D. $It absorbs heat to keep the reaction at a constant temperature.$
9.
$What does 'brittle' describe in material science?$
A. $The ability of a substance to be hammered into thin sheets.$
B. $The property of a material that breaks or shatters easily when subjected to stress.$
C. $The ability of a material to be drawn into wires.$
D. $The resistance of a material to being scratched.$
10.
$What is a 'weak alkali'?$
A. $A base that does not dissolve in water at all.$
B. $A base that only partially dissociates into hydroxide ions in aqueous solution.$
C. $A solution with a pH of 14.$
D. $A metal oxide that reacts with water to produce a very acidic solution.$

Download the worksheet for Chemistry - Terminology to practice offline. It includes additional chapter-level practice questions.

Fuels

Subtopic

Fuels under Chemistry for Grade 9 IGCSE.

About Topic & Revision

Preview questions (no answers)

1.
1. Fuels: practice question 1 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
2.
1. Fuels: practice question 2 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
3.
1. Fuels: practice question 3 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
4.
1. Fuels: practice question 4 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
5.
1. Fuels: practice question 5 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
6.
1. Fuels: practice question 6 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
7.
1. Fuels: practice question 7 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
8.
1. Fuels: practice question 8 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
9.
1. Fuels: practice question 9 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
10.
1. Fuels: practice question 10 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$

Download the worksheet for Chemistry - Fuels to practice offline. It includes additional chapter-level practice questions.

Alkanes

Subtopic

Alkanes under Chemistry for Grade 9 IGCSE.

About Topic & Revision

Preview questions (no answers)

1.
1. Alkanes: practice question 1 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
2.
1. Alkanes: practice question 2 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
3.
1. Alkanes: practice question 3 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
4.
1. Alkanes: practice question 4 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
5.
1. Alkanes: practice question 5 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
6.
1. Alkanes: practice question 6 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
7.
1. Alkanes: practice question 7 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
8.
1. Alkanes: practice question 8 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
9.
1. Alkanes: practice question 9 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
10.
1. Alkanes: practice question 10 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$

Download the worksheet for Chemistry - Alkanes to practice offline. It includes additional chapter-level practice questions.

Alkenes

Subtopic

Alkenes under Chemistry for Grade 9 IGCSE.

About Topic & Revision

Preview questions (no answers)

1.
1. Alkenes: practice question 1 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
2.
1. Alkenes: practice question 2 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
3.
1. Alkenes: practice question 3 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
4.
1. Alkenes: practice question 4 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
5.
1. Alkenes: practice question 5 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
6.
1. Alkenes: practice question 6 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
7.
1. Alkenes: practice question 7 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
8.
1. Alkenes: practice question 8 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
9.
1. Alkenes: practice question 9 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
10.
1. Alkenes: practice question 10 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$

Download the worksheet for Chemistry - Alkenes to practice offline. It includes additional chapter-level practice questions.

Polymers

Subtopic

Polymers under Chemistry for Grade 9 IGCSE.

About Topic & Revision

Preview questions (no answers)

1.
1. Polymers: practice question 1 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
2.
1. Polymers: practice question 2 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
3.
1. Polymers: practice question 3 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
4.
1. Polymers: practice question 4 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
5.
1. Polymers: practice question 5 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
6.
1. Polymers: practice question 6 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
7.
1. Polymers: practice question 7 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
8.
1. Polymers: practice question 8 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
9.
1. Polymers: practice question 9 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
10.
1. Polymers: practice question 10 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$

Download the worksheet for Chemistry - Polymers to practice offline. It includes additional chapter-level practice questions.

Experimental Design

Subtopic

Experimental Design under Chemistry for Grade 9 IGCSE.

About Topic & Revision

Preview questions (no answers)

1.
$What is the first step in obtaining salt crystals from a mixture of sand and salt?$
A. $Filter the dry mixture$
B. $Add water to dissolve the salt$
C. $Heat the mixture until it melts$
D. $Use a magnet$
2.
$In a lab, how should you smell a chemical if instructed to do so?$
A. $Inhale deeply over the container$
B. $Waft the vapor gently towards your nose$
C. $Put your nose inside the flask$
D. $Smell it through a straw$
3.
$100 \text{ cm}^3$
A. $Pipette$
B. $Burette$
C. $Beaker$
D. $Syringe$
4.
$aq$
A. $Dissolved in alcohol$
B. $Dissolved in water$
C. $A solid powder$
D. $A pure liquid$
5.
$A student is told to 'decant' a liquid from a solid. What does this mean?$
A. $Filter the mixture through paper$
B. $Carefully pour off the liquid while leaving the solid at the bottom$
C. $Evaporate the liquid using a Bunsen burner$
D. $Spin the mixture in a centrifuge$
6.
$What is the primary reason for using a pencil to draw the baseline in paper chromatography?$
A. $Pencil lead is cheaper than ink$
B. $Pencil graphite is insoluble in the chromatography solvents$
C. $Ink would travel up the paper and interfere with the results$
D. $Graphite reacts with the dyes to make them more colorful$
7.
$A white precipitate is formed when aqueous sodium hydroxide is added to a solution. The precipitate dissolves when excess sodium hydroxide is added. Which ion is present?$
A. $Ca^{2+}$
B. $Zn^{2+}$
C. $Cu^{2+}$
D. $Fe^{2+}$
8.
$CO_2$
A. $Downward delivery (upward displacement of air) into a dry tube.$
B. $Collection over water.$
C. $Using a gas syringe.$
D. $Upward delivery (downward displacement of air).$
9.
$A student performs a chromatography experiment. The spot for a pure substance 'spreads out' into a long vertical streak. What is the most likely cause?$
A. $The starting spot was too concentrated.$
B. $The solvent front reached the top of the paper.$
C. $The substance is a mixture of many components.$
D. $The paper was placed at an angle in the beaker.$
10.
$S$
A. $Zinc nitrate$
B. $Lead(II) nitrate$
C. $Copper(II) carbonate$
D. $Potassium chlorate$

Download the worksheet for Chemistry - Experimental Design to practice offline. It includes additional chapter-level practice questions.

Chromatography

Subtopic

Chromatography under Chemistry for Grade 9 IGCSE.

About Topic & Revision

Preview questions (no answers)

1.
1. Chromatography: practice question 1 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
2.
1. Chromatography: practice question 2 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
3.
1. Chromatography: practice question 3 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
4.
1. Chromatography: practice question 4 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
5.
1. Chromatography: practice question 5 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
6.
1. Chromatography: practice question 6 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
7.
1. Chromatography: practice question 7 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
8.
1. Chromatography: practice question 8 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
9.
1. Chromatography: practice question 9 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
10.
1. Chromatography: practice question 10 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$

Download the worksheet for Chemistry - Chromatography to practice offline. It includes additional chapter-level practice questions.

Separation and Purification

Subtopic

Separation and Purification under Chemistry for Grade 9 IGCSE.

About Topic & Revision

Preview questions (no answers)

1.
1. Separation and Purification: practice question 1 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
2.
1. Separation and Purification: practice question 2 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
3.
1. Separation and Purification: practice question 3 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
4.
1. Separation and Purification: practice question 4 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
5.
1. Separation and Purification: practice question 5 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
6.
1. Separation and Purification: practice question 6 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
7.
1. Separation and Purification: practice question 7 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
8.
1. Separation and Purification: practice question 8 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
9.
1. Separation and Purification: practice question 9 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
10.
1. Separation and Purification: practice question 10 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$

Download the worksheet for Chemistry - Separation and Purification to practice offline. It includes additional chapter-level practice questions.

Identification of Ions and Gases

Subtopic

Identification of Ions and Gases under Chemistry for Grade 9 IGCSE.

About Topic & Revision

Preview questions (no answers)

1.
1. Identification of Ions and Gases: practice question 1 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
2.
1. Identification of Ions and Gases: practice question 2 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
3.
1. Identification of Ions and Gases: practice question 3 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
4.
1. Identification of Ions and Gases: practice question 4 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
5.
1. Identification of Ions and Gases: practice question 5 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
6.
1. Identification of Ions and Gases: practice question 6 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
7.
1. Identification of Ions and Gases: practice question 7 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
8.
1. Identification of Ions and Gases: practice question 8 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
9.
1. Identification of Ions and Gases: practice question 9 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$
10.
1. Identification of Ions and Gases: practice question 10 for Chemistry?
A. $Option A$
B. $Option B$
C. $Option C$
D. $Option D$

Download the worksheet for Chemistry - Identification of Ions and Gases to practice offline. It includes additional chapter-level practice questions.

Chemistry

States of matter (Kinetic theory and diffusion)

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Atoms, elements, and compounds (Atomic structure and bonding)

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Stoichiometry (Formulae and the Mole concept)

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Electrochemistry (Electrolysis and electroplating)

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Chemical energetics (Exothermic and Endothermic reactions)

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Chemical reactions (Rates of reaction and Reversible reactions)

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Acids, bases, and salts (pH scale and preparation of salts)

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The Periodic Table (Group properties and Transition elements)

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Metals (Properties, extraction, and reactivity series)

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Chemistry of the Environment

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Organic Chemistry

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Experimental Techniques and Chemical Analysis

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Ions and Ionic Bonds

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Simple Molecules and Covalent Bonds

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Redox

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Oxides

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Noble Gases

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Water

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Air Quality and Climate

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Terminology

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Fuels

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Alkanes

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Alkenes

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Polymers

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Experimental Design

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Chromatography

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Separation and Purification

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Identification of Ions and Gases

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