Matter - States, Composition Quiz - ICSE Class 6 Chemistry

Free practice quiz: Matter - States, Composition (ICSE Class 6 Chemistry). 48 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. Which of the following is an example of matter?

   1. Heat
   2. Light
   3. Sound
   4. A book
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   Answer: D. A book

   Matter is anything that has mass and takes up space. Heat, light, and sound are forms of energy, not matter. A book has mass and occupies space.

2. What is the process called when a gas changes into a liquid?

   1. Evaporation
   2. Melting
   3. Condensation
   4. Sublimation
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   Answer: C. Condensation

   Condensation is the change of the physical state of matter from the gaseous phase into the liquid phase. It is the reverse of vaporization (evaporation).

3. When ice melts into water, what property of matter is changing?

   1. Chemical composition
   2. State
   3. Number of atoms
   4. Mass
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   Answer: B. State

   Melting is a physical change that alters the state of matter from solid to liquid, but the chemical composition (H2O) and the number of atoms remain the same.

4. Which of the following is a pure substance?

   1. Ocean water
   2. Brass (an alloy of copper and zinc)
   3. Distilled water
   4. Air
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   Answer: C. Distilled water

   A pure substance is a single element or a single compound. Distilled water (H2O) is a compound. Ocean water, brass, and air are mixtures.

5. Which state of matter has particles that are spread out and move in random, straight lines until they collide with something?

   1. Solid
   2. Liquid
   3. Gas
   4. Plasma
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   Answer: C. Gas

   Gas particles possess high kinetic energy, move independently of each other, and are far apart, filling the entire volume of their container.

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