Properties and Changes in Matter Review

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 evaporating.

Front

What is a chemical change?

Back

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

Front

True or False: Boiling water is a chemical change.

Back

False. Boiling water is a physical change.

Front

What is a chemical property?

Back

A chemical property is a characteristic of a substance that can only be observed during a chemical reaction. Examples include reactivity with acids, flammability, and the ability to rust.

Front

Which of the following is a chemical property of oxygen?

Back

It will result in rust when combined with iron and water.

Front

What can you do to identify a substance’s chemical properties in a laboratory?

Back

Test how it reacts with other substances.

Front

What happens during a chemical change?

Back

During a chemical change, the bonds between atoms are broken and new bonds are formed, resulting in new substances.

Front

What is an example of a physical change?

Back

An example of a physical change is when ice melts into water.

Front

What is an example of a chemical change?

Back

An example of a chemical change is when wood burns and turns into ashes and smoke.

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.