Chemistry Crossword

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Across
  1. 7. The first element on the periodic table
  2. 8. A positive particle that makes up atoms
  3. 9. Multiple atoms grouped together
  4. 10. An atom that is electrically charged
Down
  1. 1. The study of how atoms and molecules interact
  2. 2. A negative particle that makes up atoms
  3. 3. Atoms with different amounts of neutrons
  4. 4. What the inside of the atom is called
  5. 5. A neutral particle that makes up atoms
  6. 6. They make up everything
  7. 7. The molecule for water