Elements and Compounds-

Front

What are the two most common elements found in the oceans?

Back

Oxygen and Hydrogen

Front

What can only be separated by chemical means?

Back

Compound

Front

Water is a ___________.

Back

Compound

Front

Atoms bond together in different ways to make ________________.

Back

Molecules

Front

How many elements are in the compound C2H8O?

Back

3

Front

Define an element.

Back

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

Front

Define a compound.

Back

A substance formed when two or more elements chemically bond together.

Front

What is a mixture?

Back

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

Front

What is the smallest unit of an element?

Back

Atom

Front

What is a molecule?

Back

A group of two or more atoms bonded together.