Across
1
Unit of force
3
Substance with pH above 7
6
Smallest unit of an element
7
Basic unit of life
8
Center of an atom or cell
10
The Red Planet
11
Unit of electric potential
Down
1
Nerve cell in the brain
2
Disturbance that transfers energy
4
Unit of energy
5
Group of similar cells
9
Measure of matter in an object
12
Substance with pH below 7