Across
1
Push or pull on an object
3
Smallest unit of an element
5
Preserved remains of ancient life
6
Curved glass that refracts light
10
Naturally occurring inorganic solid
11
Gas essential for breathing
Down
2
Gas form of a liquid
4
Basic unit of life
7
Chemical element in table salt
8
Compound containing oxygen
9
Measure of matter in an object