Physical and Chemical Changes

Front

What is a physical change?

Back

A physical change changes the physical properties of an object, but does not create a new substance.

Front

What is a chemical change?

Back

A chemical change creates a new substance and cannot be undone.

Front

Give an example of a physical change.

Back

Melting ice is an example of a physical change.

Front

Give an example of a chemical change.

Back

Burning wood is an example of a chemical change.

Front

What happens to the substance in a physical change?

Back

The substance remains the same, only its form or appearance changes.

Front

What happens to the substance in a chemical change?

Back

The substance changes into a different substance with different properties.

Front

Is dissolving sugar in water a physical or chemical change?

Back

It is a physical change.

Front

Is rusting of iron a physical or chemical change?

Back

It is a chemical change.

Front

What is an indicator of a chemical change?

Back

Color change, gas production, or temperature change can indicate a chemical change.

Front

Can physical changes be reversed?

Back

Yes, most physical changes can be reversed.