Across
1
Nerve cell in the brain
3
Glass that splits light into spectrum
5
Hottest planet in solar system
7
Element found in all living things
9
Solid with repeating atomic pattern
10
Precious yellow metallic element
Down
2
Preserved remains of ancient life
3
Positive particle in nucleus
4
Curved glass that refracts light
6
Unit of force
8
Force that attracts objects together
11
Icy body with a tail near the sun