Front

What is the law of conservation of matter?

Back

The law of conservation of matter states that matter cannot be created or destroyed in an isolated system; it can only change forms.

Front

True or False: Matter can be destroyed during a chemical reaction.

Back

False

Front

What happens to the mass of a substance during a physical change?

Back

The mass remains the same.

Front

Define matter.

Back

Matter is anything that has mass and occupies space.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

Give an example of a physical change.

Back

Melting ice is an example of a physical change.

Front

What happens to matter when it changes from solid to liquid?

Back

The matter changes form, but the total mass remains unchanged.

Front

What is an example of a chemical change?

Back

Rusting of iron is an example of a chemical change.

Front

True or False: The total mass of reactants equals the total mass of products in a chemical reaction.

Back

True

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance without changing its chemical composition, while a chemical change results in the formation of new substances.