Across
1
Measure of matter in an object
4
Tectonic landmass section
6
Smallest unit of an element
8
Force that attracts objects together
9
Substance with pH above 7
10
Our home planet
Down
2
Disturbance that transfers energy
3
Solid with repeating atomic pattern
5
Preserved remains of ancient life
7
Compound containing oxygen
11
Absolute temperature scale unit
12
Group of similar cells