Nature of Matter: Elements, Compounds, and Mixtures
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Pure Substances vs. Mixtures
SubtopicPure Substances vs. Mixtures under Nature of Matter: Elements, Compounds, and Mixtures for Grade 8 CBSE.
Preview questions (no answers)
- 1.
In a mixture of sand and salt, the components can be separated using:
A.Only chemical methods
B.Filtration followed by evaporation
C.Magnetism only
D.Nuclear fission
- 2.
What is the atomicity of Helium?
A.Monoatomic
B.Diatomic
C.Triatomic
D.Polyatomic
- 3.
A substance with a fixed chemical formula is always a/an:
A.Mixture
B.Pure Substance
C.Impure Substance
D.Alloy
Download the worksheet for Nature of Matter: Elements, Compounds, and Mixtures - Pure Substances vs. Mixtures to practice offline. It includes additional chapter-level practice questions.
Classification: Elements and Compounds
SubtopicClassification: Elements and Compounds under Nature of Matter: Elements, Compounds, and Mixtures for Grade 8 CBSE.
Preview questions (no answers)
- 1.
What is the symbol for the element Barium?
A.B
B.Be
C.Ba
D.Br
- 2.
Which of the following is an example of a triatomic molecule of an element?
A.B.C.D. - 3.
What is the chemical formula for Sodium Hydroxide (Caustic Soda)?
A.B.C.D.
Download the worksheet for Nature of Matter: Elements, Compounds, and Mixtures - Classification: Elements and Compounds to practice offline. It includes additional chapter-level practice questions.
Metals and Non-metals
SubtopicMetals and Non-metals under Nature of Matter: Elements, Compounds, and Mixtures for Grade 8 CBSE.
Preview questions (no answers)
- 1.
Which of the following is correct about non-metals?
A.They are generally solid and hard
B.They are good conductors of heat
C.They generally do not react with water
D.They can be drawn into wires
- 2.
Which non-metal is used to preserve food items by creating an inert atmosphere?
A.Oxygen
B.Hydrogen
C.Nitrogen
D.Chlorine
- 3.
When iron reacts with copper sulphate, the reaction is . This is an example of a:
A.Combination reaction
B.Decomposition reaction
C.Displacement reaction
D.Neutralization reaction
Download the worksheet for Nature of Matter: Elements, Compounds, and Mixtures - Metals and Non-metals to practice offline. It includes additional chapter-level practice questions.
Minerals and Ores
SubtopicMinerals and Ores under Nature of Matter: Elements, Compounds, and Mixtures for Grade 8 CBSE.
Preview questions (no answers)
- 1.
Which of the following is a characteristic of a mixture but NOT a compound?
A.Has a fixed chemical formula
B.Constituents can be separated by physical methods
C.Always homogeneous in nature
D.Formed by a chemical reaction
- 2.
The shorthand notation used to represent an element is called its:
A.Equation
B.Formula
C.Symbol
D.Reaction
- 3.
Calamine is an important ore used to extract which metal?
A.Zinc
B.Lead
C.Copper
D.Iron
Download the worksheet for Nature of Matter: Elements, Compounds, and Mixtures - Minerals and Ores to practice offline. It includes additional chapter-level practice questions.
Synthetic Fibres and Plastics
SubtopicSynthetic Fibres and Plastics under Nature of Matter: Elements, Compounds, and Mixtures for Grade 8 CBSE.
Preview questions (no answers)
- 1.
Which gas is used in the manufacture of ammonia and also for filling balloons (because it is very light)?
A.Oxygen
B.Carbon dioxide
C.Hydrogen
D.Argon
- 2.
Which of the following is NOT a property of plastics?
A.Non-reactive
B.Light and durable
C.Good conductors of electricity
D.Can be molded into shapes
- 3.
Compounds are formed as a result of a:
A.Physical change
B.Chemical change
C.Temporary change
D.Mechanical change
Download the worksheet for Nature of Matter: Elements, Compounds, and Mixtures - Synthetic Fibres and Plastics to practice offline. It includes additional chapter-level practice questions.