Across
1
Measure of matter in an object
4
Smallest unit of an element
5
Tectonic landmass section
8
Path of a planet around the sun
9
Form of thermal energy
11
Preserved remains of ancient life
Down
2
Disturbance that transfers energy
3
Solid with repeating atomic pattern
5
Fourth state of matter
6
Chemical element in table salt
7
Substance with pH above 7
10
Unit of electric potential
12
Unit of force