Physical and Chemical Changes

Front

What is a chemical change?

Back

A chemical change occurs when two chemicals react with one another to form a new substance.

Front

What is an indication of a chemical change?

Back

Burning is an indication of a chemical change.

Front

What does the release or absorption of thermal energy during a reaction explain?

Back

It explains the change in temperature.

Front

Is melting ice a chemical or physical change?

Back

Melting ice is a physical change.

Front

Is rusting a chemical or physical change?

Back

Rusting is a chemical change.

Front

What is a physical change?

Back

A physical change is a change that does not result in the formation of a new substance.

Front

Give an example of a physical change.

Back

An example of a physical change is freezing water to make ice.

Front

What happens to the chemical composition during a chemical change?

Back

The chemical composition changes, resulting in the formation of new substances.

Front

What is an example of a chemical change?

Back

An example of a chemical change is the burning of wood.

Front

What are some signs of a chemical change?

Back

Signs of a chemical change include color change, gas production, and temperature change.