Across
1
Element found in all living things
3
Smallest unit of an element
5
Solid with repeating atomic pattern
8
Gas form of a liquid
9
Unit of force
10
Push or pull on an object
12
Chemical element in table salt
Down
1
Icy body with a tail near the sun
2
Mass per unit volume
4
Molten rock beneath Earth surface
6
Nerve cell in the brain
7
Fourth state of matter
11
Unit of power