Across
1
Unit of electric potential
3
Amplified beam of light
4
Substance with pH above 7
6
Unit of heredity
9
Center of an atom or cell
10
Chemical element in table salt
11
Glass that splits light into spectrum
Down
2
Group of similar cells
5
Naturally occurring inorganic solid
7
Force that attracts objects together
8
The Red Planet
12
Second lightest element