cHEMISTRY CROSSWORD

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Across
  1. 1. change that is irreversible
  2. 4. substance made up of one type of matter had has unique properties
  3. 5. a chemical reaction that occurs when oxygen in the air reacts with a substance to form a new substance and gives off energy
  4. 8. chemical combination of two or more elements in a specific ratio
  5. 9. system a material system that keeps the reaction just the reaction
  6. 11. mixture of two or more pure substances that looks like one
  7. 12. to absorb heat
  8. 14. change that is reversible
  9. 15. ability to dissolve
  10. 17. system a material system in which mass or energy can be lost to or gained
  11. 18. the weight of a substance
  12. 20. nonmetal and nonmetal
  13. 21. the things that are being used for the chemical reaction
Down
  1. 2. to release heat
  2. 3. what are made after mixing multiple reactants
  3. 6. cloudy mixture that cannot be separated
  4. 7. anything on the periodic table. Made up of one type of element
  5. 8. a substance that makes a chemical reaction go faster
  6. 9. it is a slow chemical change that occurs when oxygen decomposes metal
  7. 10. cloudy mixture that can be separated
  8. 13. the ability to pound and roll metal into sheets
  9. 16. metal and nonmetal
  10. 19. amount of mass in a given volume