Across
1
Smallest unit of an element
3
Tectonic landmass section
4
Push or pull on an object
6
Path of a planet around the sun
7
Gas essential for breathing
9
Measure of matter in an object
Down
2
Solid with repeating atomic pattern
3
Fourth state of matter
5
Unit of heredity
8
Unit of electric potential
10
Natural satellite of Earth
11
Second lightest element