Across
1
Substance with pH above 7
3
Unit of electric potential
4
Hottest planet in solar system
5
Reddish electrical conductor
7
Particle of light
9
Path of a planet around the sun
Down
2
Absolute temperature scale unit
5
Element found in all living things
6
Icy body with a tail near the sun
7
Positive particle in nucleus
8
Chemical element in table salt
10
Unit of force