Chemistry Crossword

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Across
  1. 1. cloudy mixture that cannot be separated
  2. 2. solids at a room temperature
  3. 3. pounded or rolled into sheets
  4. 6. gas to liquid.
  5. 8. stands for workplace Hazardous Materials Information System
  6. 11. liquid to gas
  7. 13. can be in between metals and non-metals
  8. 15. an element is defined by the number of protonsit has.
  9. 17. a substance that reacts with another substance
  10. 18. most reactive non-metal
  11. 19. most stable and unreactive
  12. 21. chemical combination of two or more elements
  13. 22. characteristics that can be used to describe a substance
Down
  1. 1. comes from a Greek word Khemeia , meaning juice of plant.
  2. 4. metal + non metal, high melting point
  3. 5. when 2 non-metals combine
  4. 7. cloudy mixture that can be separated.
  5. 9. anything that has mass occupies space.
  6. 10. made up of two or more substances combined together
  7. 11. substance made up of only one type of atom.
  8. 12. the average mass of an element in atomic mass units.
  9. 14. mixture of two or more pure substances that looks like one substance
  10. 15. most reactive, especially in air and water
  11. 16. a chemical change, which absorbs heat energy
  12. 20. a new substance produced in a chemical reaction between reactants