Across
1
Particle of light
3
Solid with repeating atomic pattern
4
Glass that splits light into spectrum
6
Unit of heredity
7
Gas form of a liquid
11
Nerve cell in the brain
Down
1
Fourth state of matter
2
Unit of force
5
Biological catalyst
8
Blocking of light by a celestial body
9
Push or pull on an object
10
Disturbance that transfers energy
12
Element found in all living things