Across
1
Push or pull on an object
4
Gas form of a liquid
5
Smallest unit of an element
8
Nerve cell in the brain
9
Group of similar cells
11
Preserved remains of ancient life
12
Unit of force
Down
2
Reddish electrical conductor
3
Mass per unit volume
6
Absolute temperature scale unit
7
The Red Planet
10
Tectonic landmass section