Physical and chemical change

Front

What is a physical change?

Back

A physical change is a change that is reversible and does not result in the formation of a new substance.

Front

What is a chemical change?

Back

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

Front

Is melting a gummy bear a physical or chemical change?

Back

Melting a gummy bear is a physical change.

Front

Is putting Mentos in soda a physical change?

Back

Yes, it is a physical change.

Front

Is crunching up paper a chemical change?

Back

No, crunching up paper is a physical change.

Front

What happens during a chemical change?

Back

During a chemical change, the chemical composition of a substance changes, resulting in new substances.

Front

Can physical changes be reversed?

Back

Yes, physical changes can often be reversed.

Front

Can chemical changes be reversed?

Back

Chemical changes are usually not reversible by simple physical means.

Front

What is an example of a physical change?

Back

An example of a physical change is freezing water to make ice.

Front

What is an example of a chemical change?

Back

An example of a chemical change is rust forming on iron.