Across
1
Naturally occurring inorganic solid
4
Push or pull on an object
5
Mass per unit volume
8
Preserved remains of ancient life
11
Unit of energy
Down
2
Icy body with a tail near the sun
3
Disturbance that transfers energy
6
Magnetic metallic element
7
Precious yellow metallic element
9
Substance with pH below 7
10
Compound containing oxygen