Matter and Its Transformations Quiz

What does the Law of Conservation of Matter state?

• Matter can be created and destroyed in chemical reactions.

• The amount of matter increases in physical changes.

• Matter cannot be created or destroyed in chemical reactions.

• Matter changes into pure energy in physical changes.

Which of the following is an example of a physical change?

• Burning wood

• Dissolving salt in water

• Rusting of iron

• Baking a cake

What is a chemical change?

• A change that alters the physical properties of a substance without changing its identity.

• A change where a new substance is formed with different properties.

• A change in state of matter from solid to liquid.

• A change in the volume of a substance.

What happens during melting?

• A solid turns into a gas.

• A liquid turns into a solid.

• A solid turns into a liquid.

• A gas turns into a liquid.

What is freezing?

• The process of a liquid turning into a gas.

• The process of a gas turning into a liquid.

• The process of a liquid turning into a solid.

• The process of a solid turning into a liquid.

What is evaporation?

• The process of a solid turning directly into a gas.

• The process of a liquid turning into a solid.

• The process of a liquid turning into a gas.

• The process of a gas turning into a solid.

During condensation, what happens to a substance?

• It changes from a solid to a liquid.

• It changes from a liquid to a solid.

• It changes from a gas to a liquid.

• It changes from a liquid to a gas.

Which of the following is NOT a physical change?

• Boiling water

• Melting chocolate

• Burning paper

• Freezing water

Why is dissolving sugar in water considered a physical change?

• Because it forms a new substance.

• Because the sugar and water can be separated by physical means.

• Because it releases energy.

• Because it cannot be reversed.

Which process demonstrates the Law of Conservation of Matter?

• A candle burning completely and leaving no residue.

• Water evaporating and then condensing on a cold surface.

• Cutting a piece of paper into tiny pieces.

• All of the above.