Page 1Balancing equations 1 - ReviewTwo pages which introduce representing chemical change by a reaction equation and balancing of the equation so that the number and types of atoms on both sides are the same.
Page 8Balancing equations 2 - ReviewThis introduces the idea that when proceeding through the balancing process, adjustment of previously entered coefficients may be required.
3 marksPage 9Example set 2Four examples when some adjustment of previously-entered coefficients may be necessary
Page 13Balancing equations 3 - ReviewIntroducing the idea that if groups of atoms (such as polyatomic ions) appear in both reactants and products, they can be balanced as a group
4 marksPage 14Example set 3Three examples where polyatomic ions appear on both sides of the equation