Chemical or Physical Change

Front

What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances with different properties.

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

Give an example of a chemical change.

Back

Mixing baking soda and vinegar, which produces fizzing and foaming.

Front

Give an example of a physical change.

Back

Melting ice into water, where the substance remains H2O.

Front

What are signs of a chemical change?

Back

Signs include fizzing, foaming, color change, heat production, and the formation of a precipitate.

Front

What happens to the molecules during a chemical change?

Back

The molecules rearrange to form new substances.

Front

What happens to the molecules during a physical change?

Back

The molecules remain the same but may change in arrangement, shape, or state.

Front

Is rusting of a nail a chemical or physical change?

Back

Rusting of a nail is a chemical change.

Front

Is baking cookies a chemical or physical change?

Back

Baking cookies is a chemical change.

Front

What is an example of a physical change involving shape?

Back

Cutting a piece of paper into smaller pieces.