Across
1
Icy body with a tail near the sun
3
Disturbance that transfers energy
5
Solid with repeating atomic pattern
6
Gas essential for breathing
9
Substance with pH above 7
11
Positive particle in nucleus
12
Magnetic metallic element
Down
2
Glass that splits light into spectrum
3
Unit of power
4
Center of an atom or cell
7
Absolute temperature scale unit
8
Compound containing oxygen
10
Nerve cell in the brain