Across
1
Unit of heredity
3
Mass per unit volume
5
Gas form of a liquid
6
Substance with pH above 7
9
Unit of force
10
Second lightest element
12
Unit of electric potential
13
Glass that splits light into spectrum
Down
2
Particle of light
4
Chemical element in table salt
7
Our home planet
8
Tectonic landmass section
11
Hottest planet in solar system
14
Center of an atom or cell
15
Curved glass that refracts light