Across
1
Unit of electric potential
4
Tissue that contracts for movement
5
Gas form of a liquid
8
Particle of light
9
Substance with pH below 7
11
Glass that splits light into spectrum
12
Fourth state of matter
13
Natural satellite of Earth
14
Group of similar cells
Down
2
Force that attracts objects together
3
Solid with repeating atomic pattern
6
Reddish electrical conductor
7
Naturally occurring inorganic solid
10
Hottest planet in solar system