Physical or Chemical Change

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 changes in state, shape, or size.

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 the breaking and forming of bonds.

Front

Give an example of a physical change.

Back

Crumpling paper is an example of a physical change.

Front

Give an example of a chemical change.

Back

Baking cookies is an example of a chemical change.

Front

What happens to the molecules during a physical change?

Back

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

Front

What happens to the molecules during a chemical change?

Back

During a chemical change, the molecules undergo a transformation that alters their chemical structure, resulting in new substances.

Front

Is cutting a banana a physical or chemical change?

Back

Cutting a banana is a physical change.

Front

Is popping popcorn a physical or chemical change?

Back

Popping popcorn is a chemical change.

Front

What are some indicators of a chemical change?

Back

Indicators of a chemical change include color change, temperature change, gas production, and the formation of a precipitate.

Front

What are some indicators of a physical change?

Back

Indicators of a physical change include changes in state (solid, liquid, gas), shape, or size without any change in chemical composition.