Across
1
Tectonic landmass section
3
Chemical element in table salt
6
Mass per unit volume
7
Element found in all living things
11
Unit of heredity
13
Solid with repeating atomic pattern
Down
2
Absolute temperature scale unit
4
Natural satellite of Earth
5
Biological catalyst
8
Second lightest element
9
Precious yellow metallic element
10
Substance with pH below 7
12
Nerve cell in the brain
14
Disturbance that transfers energy