What does the atom economy of a reaction measure?
How much of the starting materials ends up as the useful product
How much of the product is lost while it is separated and purified
How quickly the reactants are changed into the useful product
How much product is made compared with the amount expected
39 exam-style questions on AQA GCSE Chemistry 3.3 Yield and atom economy of chemical reactions, covering 3.3.1a Percentage yield, 3.3.1b Theoretical mass of a product, 3.3.2a Atom economy, and 3.3.2b Choosing a reaction pathway. Each one has a worked solution and a mark scheme showing where the marks go.