Across
1
Biological catalyst
2
Particle of light
4
Glass that splits light into spectrum
5
Center of an atom or cell
6
Tissue that contracts for movement
8
Basic unit of life
11
Unit of electric potential
Down
2
Tectonic landmass section
3
Measure of matter in an object
5
Unit of force
7
Smallest unit of an element
9
Substance with pH above 7
10
Curved glass that refracts light