Across
1
Tissue that contracts for movement
2
Molten rock beneath Earth surface
5
Unit of energy
6
Positive particle in nucleus
7
Group of similar cells
10
Basic unit of life
11
Gas form of a liquid
Down
1
Natural satellite of Earth
2
Naturally occurring inorganic solid
3
Hottest planet in solar system
4
Substance with pH below 7
6
Glass that splits light into spectrum
8
Substance with pH above 7
9
Smallest unit of an element