Across
1
Substance with pH below 7
2
Fourth state of matter
5
Solid with repeating atomic pattern
6
Infectious microscopic agent
7
Gas form of a liquid
8
Molten rock beneath Earth surface
Down
2
Glass that splits light into spectrum
3
Amplified beam of light
4
Unit of power
5
Icy body with a tail near the sun
9
Naturally occurring inorganic solid