Across
1
Chemical element in table salt
3
Gas essential for breathing
4
Tectonic landmass section
8
Basic unit of life
10
Amplified beam of light
11
Hottest planet in solar system
Down
2
Unit of energy
4
Fourth state of matter
5
Absolute temperature scale unit
6
Biological catalyst
7
Preserved remains of ancient life
9
Measure of matter in an object