Across
1
Unit of electric potential
3
Unit of energy
6
Chemical element in table salt
7
Substance with pH above 7
8
Positive particle in nucleus
11
Absolute temperature scale unit
12
Smallest unit of an element
Down
2
Unit of force
4
Path of a planet around the sun
5
Center of an atom or cell
8
Fourth state of matter
9
Tectonic landmass section
10
Compound containing oxygen