Across
1
Second lightest element
4
Particle of light
6
Disturbance that transfers energy
7
Infectious microscopic agent
11
Element found in all living things
Down
2
Chemical element in table salt
3
Absolute temperature scale unit
5
Gas form of a liquid
8
Fourth state of matter
9
Unit of force
10
Tectonic landmass section
12
Amplified beam of light