Across
1
Biological catalyst
4
Second lightest element
5
Solid with repeating atomic pattern
6
The Red Planet
10
Precious yellow metallic element
11
Measure of matter in an object
Down
2
Naturally occurring inorganic solid
3
Glass that splits light into spectrum
5
Basic unit of life
7
Center of an atom or cell
8
Molten rock beneath Earth surface
9
Amplified beam of light