Across
1
Precious yellow metallic element
3
Icy body with a tail near the sun
4
Naturally occurring inorganic solid
5
Fourth state of matter
7
Tissue that contracts for movement
11
Reddish electrical conductor
12
Tectonic landmass section
Down
2
Chemical element in table salt
3
Basic unit of life
6
Molten rock beneath Earth surface
8
Element found in all living things
9
Substance with pH below 7
10
Group of similar cells