Atoms & Molecules

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Across
  1. 2. A subatomic particle that has a positive charge.
  2. 6. Atoms are made of three ... particles.
  3. 7. The creator of the periodic table.
  4. 8. A subatomic particle with no charge.
  5. 10. The building blocks of the universe.
  6. 11. The 47th element in the periodic table.
  7. 14. A class that last year changed with iron.
  8. 15. The first element in the periodic table.
Down
  1. 1. A place where all the different atoms are in order (two words).
  2. 3. The center of an atom.
  3. 4. Most of an atom is... (two words).
  4. 5. The last element in the periodic table.
  5. 7. Everything that is made of atoms is...
  6. 9. Two atoms or more form a ...
  7. 12. A subatomic particle that has a negative charge.
  8. 13. The class that changed with nickel.
  9. 15. The water molecule.