Physical & Chemical Changes

Front

What is a physical change?

Back

A physical change occurs when matter changes size, shape, or state but remains the same substance.

Front

What is a chemical change?

Back

A chemical change occurs when a substance transforms into a different substance with different properties.

Front

Give an example of a physical change.

Back

Melting a chocolate bar is an example of a physical change.

Front

Give an example of a chemical change.

Back

Exploding fireworks is an example of a chemical change.

Front

What are some indicators of a chemical change?

Back

Fizzing, foaming, and burning are indicators of a chemical change.

Front

Is freezing water a physical or chemical change?

Back

Freezing water 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 substance in a physical change?

Back

In a physical change, the substance remains the same, only its form changes.

Front

What happens to the substance in a chemical change?

Back

In a chemical change, the original substance is transformed into one or more new substances.

Front

Can physical changes be reversed?

Back

Many physical changes can be reversed, such as freezing and melting.