periodic table

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Across
  1. 1. Clue- made up of elements
  2. 4. Clue- what is one element we need the most?
  3. 5. Clue- The number of protons
  4. 8. Clue- Makes or changes a substance
  5. 9. Clue- Describes a reaction
  6. 10. Clue- The number that represents it
  7. 11. Clue- How many families are there?
  8. 12. Clue- The mass of a single atom
  9. 13. Clue- cannot be broken down
  10. 16. Clue- Represents how many molecules you have
Down
  1. 2. Clue- A change in shape, form, or state of matter
  2. 3. Clue- When a substance isnt uniformed
  3. 6. Clue- made up of 2+ atoms
  4. 7. Clue- When a substance is uniform throughout
  5. 10. Clue- Represents how many atoms are in each element
  6. 14. Clue- A combination of 2 substances
  7. 15. Clue- who made a part of the periodic table