Across
1
Solid with repeating atomic pattern
4
Measure of matter in an object
5
Center of an atom or cell
8
Molten rock beneath Earth surface
9
Tectonic landmass section
Down
2
Gas form of a liquid
3
Preserved remains of ancient life
4
Naturally occurring inorganic solid
5
Unit of force
6
Tissue that contracts for movement
7
Reddish electrical conductor