Chem Vocab Words cross puzzle!

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Across
  1. 3. limits chemical reaction
  2. 8. the number of protons in the nucleus of an atom
  3. 9. a substance formed by chemical union of two or more elements
  4. 12. any substance that has a definite composition
  5. 15. numbers in front of each substance in an equation
  6. 17. the relationship between the relative quantities of substances taking part in a reaction or forming a compound
  7. 18. substances that are made
Down
  1. 1. the accuracy of your lab
  2. 2. making an equation equal
  3. 4. yield produce by math
  4. 5. a homogeneous mixture of two or more substances
  5. 6. yield produced by data
  6. 7. the amount of 3-dimensional space occupied by an object
  7. 10. left over from chemical reactant
  8. 11. the amount produced
  9. 13. substances that react
  10. 14. possible explanation for a set of observations or possible answer to a scientific question
  11. 16. mass/volume
  12. 18. list of all the elements (abbreviation)