Physical and Chemical Changes

Front

What is mass?

Back

Mass is a property of a substance that depends on how much of the substance there is.

Front

What is volume?

Back

Volume is the amount of space that an object takes up.

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

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances.

Front

Give an example of a physical change.

Back

Cutting a piece of paper is an example of a physical change.

Front

Give an example of a chemical change.

Back

Burning a piece of paper is an example of a chemical change.

Front

What happens to water when enough heat is taken away?

Back

When enough heat is taken away from water, it will become a solid (ice).

Front

What is density?

Back

Density is the mass of a substance divided by its volume.

Front

What is the boiling point?

Back

The boiling point is the temperature at which a liquid turns into a gas.

Front

What is the melting point?

Back

The melting point is the temperature at which a solid turns into a liquid.