Across
1
Nerve cell in the brain
4
Disturbance that transfers energy
5
Center of an atom or cell
Down
2
Unit of energy
3
Icy body with a tail near the sun
6
Unit of electric potential
7
Biological catalyst
8
Smallest unit of an element
Nerve cell in the brain
Disturbance that transfers energy
Center of an atom or cell
Unit of energy
Icy body with a tail near the sun
Unit of electric potential
Biological catalyst
Smallest unit of an element