Across
1
Substance with pH above 7
3
Solid with repeating atomic pattern
7
Unit of energy
8
Tissue that contracts for movement
9
Mass per unit volume
10
Chemical element in table salt
Down
2
Amplified beam of light
3
Reddish electrical conductor
4
Center of an atom or cell
5
Disturbance that transfers energy
6
Group of similar cells
11
Compound containing oxygen