Across
1
Nerve cell in the brain
5
Second lightest element
6
Particle of light
7
Magnetic metallic element
8
Tectonic landmass section
11
Gas form of a liquid
12
Path of a planet around the sun
Down
2
Solid with repeating atomic pattern
3
Push or pull on an object
4
Absolute temperature scale unit
9
Ball of burning gas in space
10
Force that attracts objects together