Across
1
Unit of electric potential
3
Substance with pH below 7
4
Mass per unit volume
6
Naturally occurring inorganic solid
7
Unit of heredity
Down
2
Path of a planet around the sun
3
Smallest unit of an element
5
Center of an atom or cell
Unit of electric potential
Substance with pH below 7
Mass per unit volume
Naturally occurring inorganic solid
Unit of heredity
Path of a planet around the sun
Smallest unit of an element
Center of an atom or cell