This printable crossword puzzle has 10 clues. Answers range from 3 to 16 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
He discovered electron
He dicovered proton
He dicovered neutron
negative charge particle of an atom
Positive charge particle of an atom
It has a neutral charge
Atom of the same element that have unequal number of proton and neutron
A charge particle
The smallest unit of all matter
If electron and proton are equal in number, the atom is said to be _______