Across
1
Fourth state of matter
4
Our home planet
5
Naturally occurring inorganic solid
7
Mass per unit volume
9
Unit of electric potential
10
Smallest unit of an element
11
Hottest planet in solar system
Down
1
Positive particle in nucleus
2
Solid with repeating atomic pattern
3
Natural satellite of Earth
5
Measure of matter in an object
6
Unit of heredity
8
Gas form of a liquid