Across
1
Gas form of a liquid
4
Smallest unit of an element
5
Unit of heredity
7
Disturbance that transfers energy
10
Measure of matter in an object
13
Curved glass that refracts light
Down
2
Unit of force
3
Fourth state of matter
6
Force that attracts objects together
8
Group of similar cells
9
Unit of energy
11
Hottest planet in solar system
12
Substance with pH above 7