Across
1
Particle of light
3
Biological catalyst
4
Basic unit of life
5
Substance with pH below 7
6
Substance with pH above 7
10
Amplified beam of light
11
Precious yellow metallic element
12
Chemical element in table salt
Down
1
Fourth state of matter
2
Absolute temperature scale unit
7
Tissue that contracts for movement
8
Solid with repeating atomic pattern
9
Mass per unit volume