Physical and Chemical Changes

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. Examples include rusting, burning, and baking.

Front

What happens during a physical change?

Back

During a physical change, the form of a substance may change, but its chemical identity remains the same.

Front

What happens during a chemical change?

Back

During a chemical change, the original substances are transformed into one or more new substances with different properties.

Front

Give an example of a physical change.

Back

An example of a physical change is ice melting into water.

Front

Give an example of a chemical change.

Back

An example of a chemical change is baking a cake.

Front

What is rusting?

Back

Rusting is a chemical change that occurs when iron reacts with oxygen and moisture in the air, forming iron oxide.

Front

What is boiling?

Back

Boiling is a physical change where a liquid turns into vapor when it reaches its boiling point.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change does not change the chemical composition of a substance, while a chemical change results in new substances being formed.

Front

What is an example of a change that is NOT a physical or chemical change?

Back

Stirring a mixture is a physical action but does not change the substances involved.