physical vs 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 boiling.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. Examples include rusting, burning, and digestion.

Front

Is boiling water a physical or chemical change?

Back

Boiling water is a physical change because it changes from liquid to gas without forming a new substance.

Front

What happens to the chemical composition during a physical change?

Back

The chemical composition remains the same during a physical change.

Front

What is evidence of a chemical change?

Back

Evidence of a chemical change includes the formation of a new substance, color change, gas production, or temperature change.

Front

Cutting paper is an example of which type of change?

Back

Cutting paper is an example of a physical change.

Front

True or False: A physical change may produce a new substance.

Back

False. A physical change does not produce a new substance.

Front

What is an example of a chemical change?

Back

An example of a chemical change is the rusting of iron.

Front

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

Back

A physical change does not alter the chemical composition of a substance, while a chemical change results in the formation of new substances.

Front

What happens to the properties of a substance during a chemical change?

Back

The properties of a substance change during a chemical change because new substances are formed.