Across
1
Group of similar cells
2
Solid with repeating atomic pattern
6
Gas form of a liquid
7
Nerve cell in the brain
8
Smallest unit of an element
9
Precious yellow metallic element
12
Tectonic landmass section
Down
2
Basic unit of life
3
Naturally occurring inorganic solid
4
Curved glass that refracts light
5
Hottest planet in solar system
10
Path of a planet around the sun
11
Form of thermal energy