Page 2Relative atomic mass - ReviewDescription of the necessity to use relative masses, finding relative atomic masses in the periodic table, calculating the mass of a formula unit from relative atomic masses
4 marksPage 3QuestionsA variety of tasks which involving calculating the mass of a formula unit from its formula or identifying which formula unit has a specified formula mass. Relative atomic masses are given in some questions and must be found in the periodic table in other questions.
Page 11Empirical formula - ReviewDescription of the difference between molecular and empirical formulae, pointing out that the molecular formula may or may not be equivalent to the empirical formula
2 marksPage 12QuestionsUsing given structures to identify the empirical formula OR identifying the structure that has a given empirical formula
1 marksPage 13Molecular formulaeDescription of how to use the relative mass of the empirical formula unit and the relative molecular mass to deduce the factor by which the empirical formula must be multiplied to give the molecular formula
1 marksPage 14QuestionsDeducing the molecular formula from the given empirical formula and the mass of the molecular formula unit