Chemical VS Physical Changes

Front

What is a chemical change?

Back

A process where substances combine or break apart to form new substances, often accompanied by energy changes.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

Give an example of a chemical change.

Back

Burning wood, rusting iron, or baking a cake.

Front

Give an example of a physical change.

Back

Melting ice, boiling water, or breaking a pencil.

Front

What happens to the chemical composition during a chemical change?

Back

The chemical composition changes as new substances are formed.

Front

What happens to the chemical composition during a physical change?

Back

The chemical composition remains the same; only the form or appearance changes.

Front

Is rusting of iron a chemical or physical change?

Back

Chemical change.

Front

Is freezing water a chemical or physical change?

Back

Physical change.

Front

What is an indicator of a chemical change?

Back

Color change, gas production, temperature change, or formation of a precipitate.

Front

What is an indicator of a physical change?

Back

Change in state (solid, liquid, gas) or shape without new substances being formed.