Elements, Compounds, & Mixtures

Front

True or false: Air is a mixture.

Back

True

Front

What is a substance made of two or more elements that are chemically combined called?

Back

Compound

Front

Is salt (NaCl) a compound or an element?

Back

Compound

Front

All matter is made of what?

Back

Atoms

Front

A substance that cannot be broken down into any other substance by ordinary chemical means is called what?

Back

An element.

Front

What is the definition of a mixture?

Back

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

Front

What is the difference between an element and a compound?

Back

An element is a pure substance that cannot be broken down, while a compound is made of two or more elements chemically combined.

Front

Give an example of a mixture.

Back

Air, salad, or a solution of salt water.

Front

What is a homogeneous mixture?

Back

A mixture that has a uniform composition throughout, such as salt water.

Front

What is a heterogeneous mixture?

Back

A mixture that does not have a uniform composition, such as a salad.