Across
1
Particle of light
4
Smallest unit of an element
5
Solid with repeating atomic pattern
7
Nerve cell in the brain
8
Hottest planet in solar system
9
Glass that splits light into spectrum
Down
2
Chemical element in table salt
3
Absolute temperature scale unit
6
Amplified beam of light
10
Form of thermal energy
11
Curved glass that refracts light