Whole lesson including starter, main work tasks and answers on emprical and molecular formulae
Lesson begins with student self assessment on homework questions on moles and ideal gas equation (Search for KS5 ideal gas equation lesson)
By the end of the lesson students should be able to:
Understand what is meant by ‘empirical formula’ and ‘molecular formula’
Calculate empirical formula from data giving composition by mass or percentage by mass
Calculate molecular formula from the empirical formula and relative molecular mass.
Worksheet questions and answers are provided for all work tasks