Across
1
Substance with pH above 7
3
Amplified beam of light
4
Solid with repeating atomic pattern
5
Center of an atom or cell
7
Nerve cell in the brain
Down
2
Mass per unit volume
4
Icy body with a tail near the sun
6
Biological catalyst
Substance with pH above 7
Amplified beam of light
Solid with repeating atomic pattern
Center of an atom or cell
Nerve cell in the brain
Mass per unit volume
Icy body with a tail near the sun
Biological catalyst