Across
1
Tectonic landmass section
3
Second lightest element
4
Nerve cell in the brain
5
Absolute temperature scale unit
6
Infectious microscopic agent
Down
1
Particle of light
2
Naturally occurring inorganic solid
3
Form of thermal energy
7
Substance with pH below 7
8
Magnetic metallic element
9
Chemical element in table salt
10
Measure of matter in an object