Across
1
Mass per unit volume
3
Element found in all living things
5
Fourth state of matter
6
Amplified beam of light
9
Smallest unit of an element
11
Unit of power
Down
2
The Red Planet
3
Solid with repeating atomic pattern
4
Hottest planet in solar system
7
Ball of burning gas in space
8
Icy body with a tail near the sun
10
Substance with pH above 7