Across
1
Curved glass that refracts light
4
Center of an atom or cell
5
Smallest unit of an element
7
Magnetic metallic element
9
Unit of power
Down
2
Element found in all living things
3
Biological catalyst
6
Unit of force
8
Particle of light
Curved glass that refracts light
Center of an atom or cell
Smallest unit of an element
Magnetic metallic element
Unit of power
Element found in all living things
Biological catalyst
Unit of force
Particle of light