Across
1
Group of similar cells
3
Measure of matter in an object
6
Particle of light
7
Compound containing oxygen
8
Substance with pH below 7
9
Element found in all living things
10
Glass that splits light into spectrum
Down
2
Curved glass that refracts light
3
Naturally occurring inorganic solid
4
Chemical element in table salt
5
Form of thermal energy
6
Fourth state of matter
11
Smallest unit of an element