Across
1
Push or pull on an object
5
Particle of light
6
Absolute temperature scale unit
7
Precious yellow metallic element
11
Measure of matter in an object
Down
2
Group of similar cells
3
Natural satellite of Earth
4
Element found in all living things
8
Unit of electric potential
9
Gas form of a liquid
10
Compound containing oxygen
12
Curved glass that refracts light