Across
1
Fourth state of matter
3
Gas essential for breathing
6
Naturally occurring inorganic solid
9
Element found in all living things
10
Measure of matter in an object
Down
2
Reddish electrical conductor
4
Infectious microscopic agent
5
Substance with pH above 7
7
Force that attracts objects together
8
Icy body with a tail near the sun
9
Solid with repeating atomic pattern