Across
1
Unit of power
2
Icy body with a tail near the sun
4
Hottest planet in solar system
6
Compound containing oxygen
7
Naturally occurring inorganic solid
Down
2
Solid with repeating atomic pattern
3
Particle of light
5
Substance with pH above 7
7
Molten rock beneath Earth surface
8
Reddish electrical conductor
9
Gas essential for breathing
10
Tissue that contracts for movement
11
Glass that splits light into spectrum