Across
1
Absolute temperature scale unit
3
Compound containing oxygen
4
Push or pull on an object
7
Fourth state of matter
9
Reddish electrical conductor
11
Basic unit of life
12
Particle of light
Down
2
Solid with repeating atomic pattern
3
Path of a planet around the sun
5
Our home planet
6
Amplified beam of light
8
Biological catalyst
10
Unit of energy
11
Element found in all living things