Across
1
Unit of energy
4
Substance with pH above 7
5
Magnetic metallic element
7
The Red Planet
9
Unit of heredity
10
Element found in all living things
Down
2
Naturally occurring inorganic solid
3
Nerve cell in the brain
6
Fourth state of matter
8
Center of an atom or cell
11
Natural satellite of Earth
12
Push or pull on an object