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. Examples include melting, freezing, and breaking.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. It involves a chemical reaction and changes the chemical composition of the substance. Examples include digestion and rusting.

Front

Is digesting food a chemical or physical change?

Back

Chemical change.

Front

Is melting butter a chemical or physical change?

Back

Physical change.

Front

Is breaking glass into tiny shards a chemical or physical change?

Back

Physical change.

Front

When you break a cracker into pieces, is it a chemical or physical change?

Back

Physical change.

Front

Is freezing juice a physical change or a chemical change?

Back

Physical change.

Front

What happens to the chemical composition during a physical change?

Back

The chemical composition remains the same during a physical change.

Front

What happens to the chemical composition during a chemical change?

Back

The chemical composition changes during a chemical change, resulting in new substances.

Front

Give an example of a physical change.

Back

Examples include melting ice, boiling water, or dissolving sugar in water.