Across
1
Unit of force
3
Amplified beam of light
4
Tissue that contracts for movement
6
Icy body with a tail near the sun
7
Precious yellow metallic element
8
Reddish electrical conductor
9
Unit of electric potential
10
Biological catalyst
Down
2
Positive particle in nucleus
4
Naturally occurring inorganic solid
5
Path of a planet around the sun
11
Substance with pH above 7