Chemistry
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
States of matter (Kinetic theory and diffusion)
SubtopicStates of matter (Kinetic theory and diffusion) under Chemistry for Grade 9 IGCSE.
Preview questions (no answers)
- 1.
The temperature at which a liquid turns into a gas throughout the bulk of the liquid is called its:
A.Melting point
B.Freezing point
C.Boiling point
D.Evaporation point
- 2.
What occurs when a substance undergoes sublimation?
A.A liquid turns into a solid
B.A solid turns directly into a gas
C.A gas turns into a liquid
D.A solid turns into a liquid
- 3.
Which sequence correctly shows the states of matter in order of increasing particle kinetic energy?
A.Solid -> Liquid -> Gas
B.Gas -> Liquid -> Solid
C.Liquid -> Solid -> Gas
D.Solid -> Gas -> Liquid
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)
SubtopicAtoms, elements, and compounds (Atomic structure and bonding) under Chemistry for Grade 9 IGCSE.
Preview questions (no answers)
- 1.
What is the relative charge of a neutron?
A.+1
B.-1
C.0
D.+2
- 2.
Which formula represents a compound made of one Calcium atom and two Chlorine atoms?
A.B.C.D. - 3.
A lithium atom has 3 protons and 4 neutrons. What is its atomic number?
A.7
B.4
C.3
D.1
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)
SubtopicStoichiometry (Formulae and the Mole concept) under Chemistry for Grade 9 IGCSE.
Preview questions (no answers)
- 1.
What is the mass of one mole of chlorine gas, ? ()
A.35.5 g
B.71 g
C.17.75 g
D.100 g
- 2.
What is the mass of 0.2 moles of copper? (Relative atomic mass: )
A.12.8 g
B.32 g
C.6.4 g
D.128 g
- 3.
Which of the following describes the mass of one mole of a substance?
A.Atomic number
B.Molar mass
C.Relative isotopic mass
D.Avogadro's number
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)
SubtopicElectrochemistry (Electrolysis and electroplating) under Chemistry for Grade 9 IGCSE.
Preview questions (no answers)
- 1.
What happens to the ions in the electrolysis of molten ?
A.They gain electrons to become
B.They lose electrons to become
C.They stay in the liquid as atoms
D.They turn into sodium ions
- 2.
Which of these best describes the electrolyte in a cell used to plate a ring with silver?
A.Solid silver nitrate
B.Silver nitrate solution
C.Molten silver metal
D.Tap water
- 3.
In the electrolysis of molten lead(II) iodide (), what would be observed at the anode?
A.Silvery liquid
B.Purple vapors
C.Colorless gas
D.Blue flame
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)
SubtopicChemical energetics (Exothermic and Endothermic reactions) under Chemistry for Grade 9 IGCSE.
Preview questions (no answers)
- 1.
Which of the following statements about is true?
A.It is always positive
B.It represents the change in heat energy at constant pressure
C.It is only used for endothermic reactions
D.It is measured in degrees Celsius
- 2.
Which of the following reactions is typically endothermic?
A.Reaction of an acid with a metal
B.Cooking food
C.Explosion of dynamite
D.Formation of water from hydrogen and oxygen
- 3.
In an exothermic reaction, where does the released energy come from?
A.The sun
B.The thermometer
C.The chemical bonds of the reactants
D.The air in the room
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)
SubtopicChemical reactions (Rates of reaction and Reversible reactions) under Chemistry for Grade 9 IGCSE.
Preview questions (no answers)
- 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.
In a reaction between a solid and a solution, where does the reaction take place?
A.Only in the center of the solid
B.Only at the surface of the solid
C.Only in the air above the solution
D.In the middle of the liquid only
- 3.
Which of the following is NOT a way to increase the rate of reaction?
A.Increasing temperature
B.Increasing concentration
C.Adding a catalyst
D.Increasing the particle size of a solid
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)
SubtopicAcids, bases, and salts (pH scale and preparation of salts) under Chemistry for Grade 9 IGCSE.
Preview questions (no answers)
- 1.
What does the 'p' in pH stand for (historically)?
A.Potential
B.Power
C.Percent
D.Part
- 2.
Which tool is best for transferring exactly 25.0 of an alkali into a conical flask?
A.Beaker
B.Pipette
C.Glass rod
D.Test tube
- 3.
Which salt is produced by the reaction between zinc and sulfuric acid?
A.Zinc sulfate
B.Zinc chloride
C.Zinc nitrate
D.Zinc oxide
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)
SubtopicThe Periodic Table (Group properties and Transition elements) under Chemistry for Grade 9 IGCSE.
Preview questions (no answers)
- 1.
Which of these is a characteristic of most transition metals?
A.They are liquid at room temperature
B.They have very low melting points
C.They can act as catalysts
D.They react violently with cold water
- 2.
Elements in the same group of the Periodic Table are similar because they have the same number of:
A.Protons
B.Neutrons
C.Electrons in their outer shell
D.Total electron shells
- 3.
When an Alkali metal reacts with oxygen, what is the general name of the product formed?
A.Metal hydroxide
B.Metal chloride
C.Metal oxide
D.Metal carbonate
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)
SubtopicMetals (Properties, extraction, and reactivity series) under Chemistry for Grade 9 IGCSE.
Preview questions (no answers)
- 1.
Which subatomic particles are free to move throughout a metallic lattice?
A.Protons
B.Neutrons
C.Delocalized electrons
D.Nuclei
- 2.
Which of the following metals will displace copper from a copper(II) nitrate solution?
A.Silver
B.Gold
C.Iron
D.Platinum
- 3.
What is the main disadvantage of using iron for construction without protection?
A.It is too heavy
B.It is too expensive
C.It rusts easily
D.It is not strong enough
Download the worksheet for Chemistry - Metals (Properties, extraction, and reactivity series) to practice offline. It includes additional chapter-level practice questions.