This printable crossword puzzle has 20 clues. Answers range from 4 to 9 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
the central and most important part of an object
positive electric charge
same mass as a proton but without an electric charge
charge of negative electricity
Cu
N
O
C
He
S
B
H
Fe
Si
Li
Mg
Ne
Cl
Au
Ar