Unit B Crossword

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Across
  1. 8. a reaction that takes place when two or more substances to react to form new substances
  2. 9. vertical column of elements in the periodic table
  3. 10. change of state from a solid to a gas
  4. 11. group 1 elements in the periodic table; the most reactive of the metals
  5. 12. group 2 elements in the periodic table; reactivity is not as strong as the alkali metals
  6. 13. change of state from a gas to a solid
  7. 14. new substance produced in a chemical reaction between reactants
  8. 16. combination of symbols that represent a compound
  9. 20. refers to the three common states in which matter can exist
  10. 23. a system of easy-to-see warning symbols on hazardous materials
  11. 24. characteristic that describes a particular substance
Down
  1. 1. change that results when two or more substances react to create a different substance or substances
  2. 2. chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy
  3. 3. ability of a substance to conduct electricity or heat
  4. 4. positively charged centre of an atom
  5. 5. chemical combination of two or more elements in a specific ratio
  6. 6. description of how a substance interacts with other substances
  7. 7. change of state from a gas to a liquid
  8. 14. horizontal row of elements in the periodic table
  9. 15. an experiment in which all reactants and all products of a chemical reaction are accounted for
  10. 17. substance that helps a chemical reaction to proceed more quickly
  11. 18. change of state from a solid to a liquid
  12. 19. smallest part of an element that is representative of that element
  13. 21. change of state from a liquid to a gas
  14. 22. change of state from a liquid to a solid