Physical and Chemical Changes

Front

What state of matter takes the shape of the container it's in?

Back

Liquid takes the shape of its container.

Front

True or False: When changing a liquid to a solid thermal energy is removed for freezing.

Back

True. Freezing occurs when thermal energy is removed.

Front

True or False: When changing a solid to a liquid thermal energy is removed for melting.

Back

False. Melting occurs when thermal energy is added.

Front

What is rusting?

Back

Rusting is a chemical change that occurs when iron reacts with oxygen and moisture.

Front

If you put a sugar cube into a cup of hot water, what would happen to the sugar over time?

Back

The sugar will dissolve in the water.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without changing 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

Melting ice is an example of a physical change.

Front

Give an example of a chemical change.

Back

Burning wood is an example of a chemical change.

Front

What happens to the thermal energy during freezing?

Back

Thermal energy is removed during freezing.