Across
1
Unit of energy
4
Smallest unit of an element
5
Center of an atom or cell
8
Blocking of light by a celestial body
Down
2
Biological catalyst
3
Precious yellow metallic element
6
Glass that splits light into spectrum
7
Fourth state of matter
Unit of energy
Smallest unit of an element
Center of an atom or cell
Blocking of light by a celestial body
Biological catalyst
Precious yellow metallic element
Glass that splits light into spectrum
Fourth state of matter