1.
a table of chemical elements
2.
a way of representing atoms or molecules
4.
a substance consisting of uncombined atoms
5.
essential to living organisms
6.
a mass of atom of a molecule
7.
postively charged atoms
8.
neutrally charged atoms
9.
negativelty charged atoms
13.
the invisible regon around any charged object where an electric force is applied
14.
charging a object without touching it
15.
an object with equal amounts of postive charge and negative charge
