Across
1
Absolute temperature scale unit
4
Smallest unit of an element
5
Positive particle in nucleus
9
Force that attracts objects together
11
Precious yellow metallic element
Down
2
Element found in all living things
3
Icy body with a tail near the sun
6
Natural satellite of Earth
7
Solid with repeating atomic pattern
8
Hottest planet in solar system
10
Push or pull on an object