Chemical vs. Physical Changes

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new substances. Examples include burning, rusting, and spoiling.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance but does not change its chemical composition. Examples include melting, freezing, and dissolving.

Front

When something burns, what type of change is it?

Back

Chemical change.

Front

What happens to the substances in a chemical change?

Back

They change into new substances with different properties.

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change.

Front

What is an example of a chemical change?

Back

The spoiling of milk is an example of a chemical change.

Front

What caused the candles to go out when blown on?

Back

Carbon dioxide from blowing on them.

Front

How can we test if a gas is hydrogen?

Back

By using a flame test.

Front

Is mixing air into egg whites a physical or chemical change?

Back

Physical change.

Front

What is rusting an example of?

Back

Rusting is an example of a chemical change.