Across
1
Disturbance that transfers energy
3
Hottest planet in solar system
5
Unit of heredity
8
Substance with pH below 7
11
Icy body with a tail near the sun
Down
2
Nerve cell in the brain
4
Unit of force
5
Precious yellow metallic element
6
Substance with pH above 7
7
Unit of energy
9
Biological catalyst
10
Form of thermal energy