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 but does not create a new substance.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of one or more new substances and cannot be undone.

Front

Give an example of a physical change.

Back

Melting ice cubes is an example of a physical change.

Front

Give an example of a chemical change.

Back

Baking a cake is an example of a chemical change.

Front

What happens to the particles of a substance during a physical change?

Back

The particles may move closer together or further apart, but the substance remains the same.

Front

What happens to the particles of a substance during a chemical change?

Back

The particles rearrange to form new substances.

Front

Is melting butter a physical or chemical change?

Back

Melting butter is a physical change.

Front

Is baking bread a physical or chemical change?

Back

Baking bread is a chemical change.

Front

What is an indicator of a chemical change?

Back

An indicator of a chemical change can be a change in color, temperature, or the production of gas.

Front

What is an indicator of a physical change?

Back

An indicator of a physical change can be a change in state, such as solid to liquid.