Across
1
Nerve cell in the brain
4
Gas form of a liquid
5
Solid with repeating atomic pattern
6
Infectious microscopic agent
7
Compound containing oxygen
11
Unit of force
Down
2
Unit of energy
3
Glass that splits light into spectrum
4
Hottest planet in solar system
5
Element found in all living things
8
Group of similar cells
9
Icy body with a tail near the sun
10
Absolute temperature scale unit
12
Preserved remains of ancient life