Across
1
Force that attracts objects together
4
Measure of matter in an object
5
Naturally occurring inorganic solid
6
Solid with repeating atomic pattern
10
Natural satellite of Earth
11
Second lightest element
Down
1
Precious yellow metallic element
2
Gas form of a liquid
3
Ball of burning gas in space
5
Tissue that contracts for movement
7
Form of thermal energy
8
Unit of energy
9
Positive particle in nucleus