Matter crossword puzzle Sophie

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Across
  1. 4. How is the two by H₂O called?
  2. 11. ---- Substance are unbreakable
  3. 12. you need lab equipment to make them
  4. 14. when two or more different chemical elements chemically bond together you call it a ---------
  5. 15. --------- research has nothing to do with numbers, it has to do with characteristics, motives or opinions
  6. 16. Anything that has math you call a matter
  7. 17. can not broke down into simpler substances
Down
  1. 1. combination of 2 or more pure substances
  2. 2. expressed in numbers, quantities, or measurements
  3. 3. What is the name for the 3 in 3H₂O?
  4. 5. ---------- reactions releases heat
  5. 6. Physical change there isn't a fixed volume and shape
  6. 7. mass divided by volume equals
  7. 8. ----------- reactions absorbs heat
  8. 9. ----can not change while weight can change
  9. 10. the Line of best --- representing the general trend
  10. 13. ------------ of matter is the chemical laws which created and destroyed matter