Across
1
Substance with pH above 7
3
Tectonic landmass section
5
Nerve cell in the brain
6
Push or pull on an object
8
Magnetic metallic element
10
Gas form of a liquid
11
Particle of light
Down
2
Center of an atom or cell
4
Compound containing oxygen
7
Our home planet
9
Chemical element in table salt
12
Form of thermal energy