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 without altering its chemical composition.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances.

Front

Is rusting a physical or chemical change?

Back

Rusting is a chemical change.

Front

What happens to the substances in a chemical change?

Back

In a chemical change, the original substances are transformed into different substances with new properties.

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change.

Front

What is an example of a chemical change?

Back

Burning wood is an example of a chemical change.

Front

What are some signs of a chemical change?

Back

Signs of a chemical change include color change, gas production (bubbles), temperature change, and the formation of a precipitate.

Front

How can you tell if a chemical reaction has occurred?

Back

You can tell if a chemical reaction has occurred by observing signs such as gas production, color change, or the formation of a solid.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change does not create a new substance, while a chemical change does create a new substance.

Front

What is an example of a chemical reaction producing gas?

Back

Baking soda reacting with vinegar produces carbon dioxide gas.