Chemical and Physical 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.

Front

What is a chemical change?

Back

A chemical change is a change that produces one or more new substances with different properties from the original substance.

Front

Give an example of a physical change.

Back

Crushing a can is an example of a physical change.

Front

Give an example of a chemical change.

Back

Rusting of a bike is an example of a chemical change.

Front

Is melting ice a physical or chemical change?

Back

Melting ice is a physical change.

Front

Is burning wood a physical or chemical change?

Back

Burning wood is a chemical change.

Front

What happens to the molecules during a physical change?

Back

During a physical change, the molecules may change their arrangement but their chemical structure remains the same.

Front

What happens to the molecules during a chemical change?

Back

During a chemical change, the molecules rearrange to form new substances with different chemical properties.

Front

Is digesting food a physical or chemical change?

Back

Digesting food is a chemical change.

Front

What is an indicator of a chemical change?

Back

An indicator of a chemical change can include color change, gas production, or the formation of a precipitate.