Across
1
Reddish electrical conductor
4
Unit of electric potential
5
Preserved remains of ancient life
6
Nerve cell in the brain
11
Center of an atom or cell
Down
2
Magnetic metallic element
3
Absolute temperature scale unit
7
Ball of burning gas in space
8
Substance with pH above 7
9
Solid with repeating atomic pattern
10
Positive particle in nucleus