Atomic Structure
Crossword
Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.
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Check
Across:
2.
tiny bits of matter that make up everything
3.
an atom, molecule, or ion that has an unpaired valence electron
4.
neither positively charged nor negatively charged
Down:
1.
an electrical property of a particle at the subatomic scale
2.
when an atom has more protons than electrons
OK