Across
1
Positive particle in nucleus
4
Unit of heredity
6
Naturally occurring inorganic solid
7
Unit of electric potential
11
Smallest unit of an element
Down
2
Absolute temperature scale unit
3
Preserved remains of ancient life
5
Push or pull on an object
8
Substance with pH below 7
9
Gas form of a liquid
10
Hottest planet in solar system