Anything that takes up space and has mass

This is a good picture because the concrete blocks take up space.

The smallest unit of a chemical element.

I think this is a good picture because it looks complex and really small.

There is about 120 kinds and is made up of only one kind of atom.

I think this is a good picture because it is made up of the same kind of brick.

A list of all the elements in the universe.

I think this is a good picture because it is really organized.

Formed when 2 or more atoms join together.

I think this is a good picture because they have came together.

Formed when two or more DIFFERENT atoms are joined together.

I think this is a good picture because they are close to each other like a compound and they are different.