Across
1
Absolute temperature scale unit
4
Natural satellite of Earth
7
Mass per unit volume
8
Ball of burning gas in space
10
Solid with repeating atomic pattern
12
Naturally occurring inorganic solid
13
Reddish electrical conductor
Down
2
Unit of heredity
3
Gas essential for breathing
5
Gas form of a liquid
6
Magnetic metallic element
8
Chemical element in table salt
9
Glass that splits light into spectrum
11
Substance with pH below 7