Across
1
Amplified beam of light
2
The Red Planet
4
Unit of heredity
7
Biological catalyst
8
Push or pull on an object
Down
2
Naturally occurring inorganic solid
3
Glass that splits light into spectrum
5
Element found in all living things
6
Gas essential for breathing
9
Center of an atom or cell
10
Fourth state of matter
11
Solid with repeating atomic pattern