Physical and Chemical Changes Flashcard

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. Examples include melting, freezing, and dissolving.

Front

What is a Chemical Change?

Back

A Chemical Change is a change that results in the formation of new chemical substances. It involves a chemical reaction and changes the molecular structure of the substance. Examples include burning, rusting, and digestion.

Front

Is making a paper airplane a Physical or Chemical Change?

Back

Physical Change

Front

Is burning logs in a campfire a Physical or Chemical Change?

Back

Chemical Change

Front

What happens to glass when it breaks? Is it a Physical or Chemical Change?

Back

Physical Change

Front

What is rusting of iron? Is it a Physical or Chemical Change?

Back

Chemical Change

Front

What is an example of a Physical Change involving water?

Back

Water freezing into ice.

Front

What is an example of a Chemical Change involving food?

Back

Cooking food, which changes its chemical structure.

Front

What is the difference between a Physical Change and a Chemical Change?

Back

A Physical Change does not change the substance's chemical identity, while a Chemical Change results in new substances being formed.

Front

Can a Physical Change be reversed?

Back

Yes, many Physical Changes can be reversed, such as freezing and melting.