Chemistry Crossword

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Across
  1. 4. Chemical reaction involving oxygen, fuel and heat
  2. 7. Workplace hazardous materials information system
  3. 11. Subatomic particle with no electrical charge
  4. 12. reaction that occurs when two or more substances combine to form a new substance
  5. 18. number of protons in one atom of an element
  6. 21. Stands for atomic mass unit
  7. 23. most reactive metals
  8. 24. group 18 in the periodic table, the most stable and unreactive elements
Down
  1. 1. A substance can be rolled into sheets
  2. 2. substance that electric charge can move through easily
  3. 3. an experiment in which the products can escape but are still accounted for
  4. 5. Subatomic particle in the nucleus with positive charge
  5. 6. combination of symbols that represent a compound
  6. 8. negatively charged particle around the nucleus of an atom
  7. 9. Chemical reaction
  8. 10. Smallest part of an element
  9. 12. experiment in which all the products are there and accounted for
  10. 13. Chemical reaction that releases heat
  11. 14. substance that resists the flow of electrons
  12. 15. solution in which water is the solvent
  13. 16. combination of two or more elements
  14. 17. amount of mass in a given volume of a substance
  15. 19. low chemical change that occurs when oxygen reacts with metals
  16. 20. description of a solid that can be stretched into long wires
  17. 22. A substance that helps to speed up a chemical reaction