Review: Changes in Matter

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically combined.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together.

Front

What is the smallest particle of an element?

Back

An atom is the smallest particle in an element.

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture that has a uniform composition throughout.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture that consists of visibly different substances or phases.

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.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances.

Front

Give an example of a physical change.

Back

Cutting a piece of paper is an example of a physical change.

Front

Give an example of a chemical change.

Back

Burning a piece of paper is an example of a chemical change.