Quiz on Matter and Its Changes

Nisa is organizing her desk and notices that her books have a fixed shape and volume. What is a substance that has a fixed shape and volume called?

• Gas

• Liquid

• Solid

• Plasma

Answer explanation

A substance with a fixed shape and volume is called a solid. Unlike gases and liquids, solids maintain their shape and do not conform to the shape of their container.

Nisa is organizing her desk and notices that her books have a fixed shape and volume. What is a substance that has a fixed shape and volume called?

• Gas

• Liquid

• Solid

• Plasma

Answer explanation

A substance with a fixed shape and volume is called a solid. Unlike gases and liquids, solids maintain their shape and do not conform to the shape of their container.

What characterizes a physical change?

• Chemical reaction occurs

• Change in shape or size

• Formation of a new substance

• All answers are correct

Answer explanation

A physical change is characterized by a change in shape or size without altering the substance's chemical composition. Unlike chemical changes, no new substances are formed.

What is an example of a physical change?

• Burning wood

• Freezing water

• Fermentation

• Carbonation

What is the process of water turning into vapor called?

• Freezing

• Evaporation

• Melting

• Sublimation

Which of the following is a chemical change?

• Ice turning to water

• Water boiling

• Rusting iron

• Dry ice sublimating

What substance does not have a fixed shape and volume?

• Gas

• Liquid

• Solid

• Crystal

Sublimation occurs in which substance?

• Water

• Dry ice

• Oil

• Salt

Which of the following is an example of a solid?

• Water

• Oxygen

• Salt

• Water vapor

Why can ice float on water?

• Because it is heavier

• Because it is lighter

• Because it is solid

• Because it is cold