Sofian's H2O Vocabulary

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Across
  1. 2. it has 79 protons and electrons
  2. 4. Positive
  3. 6. elements combined
  4. 7. H2O
  5. 9. connection
  6. 11. a group of multiple atoms
  7. 12. look its He in the periodic table
  8. 13. after
  9. 14. before
Down
  1. 1. Neutral atom
  2. 3. Breathe in and out
  3. 5. Center
  4. 8. Negative
  5. 10. smallest and makes up everything