Across
1
Substance with pH above 7
3
Force that attracts objects together
5
Solid with repeating atomic pattern
6
Unit of heredity
7
Nerve cell in the brain
8
Magnetic metallic element
11
Unit of force
Down
2
Mass per unit volume
4
Unit of power
5
Element found in all living things
9
Second lightest element
10
Amplified beam of light