Across
1
Substance with pH above 7
4
Tectonic landmass section
5
Curved glass that refracts light
7
Mass per unit volume
9
Substance with pH below 7
11
Tissue that contracts for movement
Down
2
Element found in all living things
3
Center of an atom or cell
6
Our home planet
8
Absolute temperature scale unit
10
Chemical element in table salt