TOMS Review: Changes in Matter

Chemical change: A process where substances combine or break apart to form new substances.

A compound is a substance formed when two or more elements combine chemically.

A new substance is formed.

A compound.

CO2 is a compound made of carbon and oxygen.

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

A combination of two or more substances that are not chemically bonded.

A pure substance that cannot be broken down into simpler substances by chemical means.

A compound is a chemical combination of elements, while a mixture is a physical combination of substances.

Burning wood, which produces ash and gases.