Across
1
Unit of electric potential
4
Our home planet
5
Chemical element in table salt
6
Center of an atom or cell
7
Unit of energy
12
Gas form of a liquid
13
Form of thermal energy
Down
2
Absolute temperature scale unit
3
Solid with repeating atomic pattern
8
Molten rock beneath Earth surface
9
Curved glass that refracts light
10
Compound containing oxygen
11
Element found in all living things