Across
1
Chemical element in table salt
3
Push or pull on an object
7
Center of an atom or cell
8
Curved glass that refracts light
10
Absolute temperature scale unit
11
Path of a planet around the sun
Down
2
Solid with repeating atomic pattern
4
Naturally occurring inorganic solid
5
Disturbance that transfers energy
6
Measure of matter in an object
9
Natural satellite of Earth
12
Second lightest element