Across
1
Center of an atom or cell
3
Smallest unit of an element
4
Force that attracts objects together
5
Reddish electrical conductor
6
Gas form of a liquid
7
Absolute temperature scale unit
10
Fourth state of matter
Down
2
Solid with repeating atomic pattern
5
Element found in all living things
6
Infectious microscopic agent
8
Magnetic metallic element
9
Basic unit of life