Across
1
Form of thermal energy
3
Unit of heredity
5
Glass that splits light into spectrum
8
Gas form of a liquid
9
Biological catalyst
10
Gas essential for breathing
12
Smallest unit of an element
13
The Red Planet
Down
2
Center of an atom or cell
3
Precious yellow metallic element
4
Unit of energy
6
Tectonic landmass section
7
Molten rock beneath Earth surface
10
Path of a planet around the sun
11
Unit of force