Across
1
Naturally occurring inorganic solid
4
Biological catalyst
5
Precious yellow metallic element
7
Solid with repeating atomic pattern
8
Unit of heredity
9
Blocking of light by a celestial body
Down
1
Natural satellite of Earth
2
Unit of energy
3
Substance with pH above 7
6
Measure of matter in an object
7
Element found in all living things
10
Unit of force