Across
1
Magnetic metallic element
5
Substance with pH above 7
6
Glass that splits light into spectrum
8
Push or pull on an object
9
Mass per unit volume
10
Form of thermal energy
11
Preserved remains of ancient life
Down
2
Naturally occurring inorganic solid
3
Compound containing oxygen
4
Gas essential for breathing
7
Curved glass that refracts light
12
Reddish electrical conductor