Chemistry Crossword

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Across
  1. 3. compound, a pure substance formed from two or more non-metals
  2. 5. bond, the simultaneous strong attraction of positive and negative ions in an ionic compound
  3. 6. the breakdown of a metal resulting from reactions with chemicals in its environment
  4. 9. displacement, a reaction that occurs when elements in different compounds displace each other or exchange places producing two new compounds
  5. 11. a pure substance composed of two or more elements in a fixed ratio
  6. 13. a compound that separates into ions when it dissolves in water- producing a solution that conducts electricity
  7. 17. ion, an ion made up of more than one atom that acts as a single particle
  8. 18. a column of elements in the periodic table with similar properties alkali metals the elements (except hydrogen) in the first column of the periodic table (Group 1)
  9. 20. a row of elements in the periodic table
  10. 21. a chemical present at the start of a chemical reaction, that is used up during the reaction
  11. 22. a negatively charged ion
  12. 23. equation, a way of describing a chemical reaction using the chemical formulas of the reactants and products
  13. 24. a reaction in which two reactants combine to make a larger or more complex product; general pattern: A + B -> AB
  14. 27. gases, the elements in the eighteenth column of the periodic table (Group 18)
  15. 30. a charged particle that results when an atom gains or loses one or more electrons
  16. 31. equation, a way of describing a chemical reaction using the names of the reactants and products
  17. 32. reaction, a process in which substances interact causing the formation of new substances with new properties
  18. 33. steel, steel that has been coated with a protective layer of zinc which forms a hard and insoluble oxide
  19. 34. bond, a bond that results from the sharing of outer electrons between non-metal atoms
  20. 35. the elements in the seventeenth column of the periodic table (Group 17)
  21. 36. a pure substance that cannot be broken down into simpler substances
Down
  1. 1. a chemical that is produced during a chemical reaction
  2. 2. a description of a substance that does not involve forming a new substance; for example colour- texture- density- smell- solubility- taste- melting point and physical state
  3. 4. Hazardous Materials Information System, provides Canadian workers with information on the safe use of hazardous products in their workplace.
  4. 7. earth metals, the elements in the second column of the periodic table (Group 2)
  5. 8. the rapid reaction of a substance with oxygen to produce oxides and energy; burning
  6. 10. a particle in which atoms are joined by covalent bonds
  7. 12. a reaction in which a large or more complex molecule breaks down to form two (or more) simpler products; general pattern: AB -> A + B
  8. 14. a positively charged ion
  9. 15. diagram, a model representing the arrangement of electrons in orbits around the nucleus of an atom
  10. 16. molecule, a molecule consisting of only two atoms of either the same or different elements
  11. 19. compound, a compound made up of one or more positive metal ions (cations) and one or more negative non-metal ions (anions)
  12. 24. displacement, a reaction in which an element displaces another element in a compound producing a new compound and a new element
  13. 25. combustion, a combustion reaction of hydrocarbons that may produce carbon monoxide- carbon- carbon dioxide- soot, water and energy; occurs when the oxygen supply is limited
  14. 26. combustion, a combustion reaction of hydrocarbons that uses all the available fuel and produces only carbon dioxide- water and energy; occurs when the supply of oxygen is plentiful
  15. 28. of conservation of mass, the statement that in any given chemical reaction the total mass of the reactants equals the total mass of the products
  16. 29. property, a description of what a substance does as it changes into one or more new substances