Across
1
Disturbance that transfers energy
3
Center of an atom or cell
4
Particle of light
7
Solid with repeating atomic pattern
10
Magnetic metallic element
Down
2
Absolute temperature scale unit
5
Chemical element in table salt
6
Preserved remains of ancient life
8
Nerve cell in the brain
9
Substance with pH above 7
11
Icy body with a tail near the sun
12
Reddish electrical conductor