Across
1
Element found in all living things
2
Fourth state of matter
4
Unit of electric potential
6
Hottest planet in solar system
7
Molten rock beneath Earth surface
Down
2
Particle of light
3
Substance with pH below 7
5
Reddish electrical conductor
6
Infectious microscopic agent
8
Force that attracts objects together
9
Chemical element in table salt
10
Smallest unit of an element