Atom Crossword: Chemistry Tic-Tac-Toe

This printable crossword puzzle on the topic of Elements & Periodic Table has 17 clues. Answers range from 3 to 18 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

Description

Makes up all matter.
There are 3 of these, they make up an atom.
Has a positive charge, found inside the nucleus.
Has a neutral charge, found inside the nucleus.
Found outside of the nucleus, negative charge.
Located in the middle of the Atom.
Table used to organize different elements.
Located on the very last electron ring.
Where all electrons are located.
A horizontal row of elements on the periodic table.
Vertical rows on the periodic table.
The number of protons in the nucleus of an atom.
The mass of an atom.
How many gases are there on the periodic table?
Who formatted the Periodic Table of Elements?
How many periods are there on the Periodic Table?
How many families are on the Periodic Table of Elements?

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