Across
1
Unit of energy
4
Icy body with a tail near the sun
6
Biological catalyst
7
Substance with pH below 7
Down
2
Push or pull on an object
3
Nerve cell in the brain
5
Precious yellow metallic element
8
Naturally occurring inorganic solid
Unit of energy
Icy body with a tail near the sun
Biological catalyst
Substance with pH below 7
Push or pull on an object
Nerve cell in the brain
Precious yellow metallic element
Naturally occurring inorganic solid