Across
1
Unit of heredity
3
Magnetic metallic element
4
Tissue that contracts for movement
7
Mass per unit volume
9
Fourth state of matter
10
Unit of electric potential
11
Precious yellow metallic element
Down
1
Force that attracts objects together
2
Curved glass that refracts light
5
Smallest unit of an element
6
Unit of force
8
Disturbance that transfers energy