Copper carbonate breaks down when it is heated in a furnace. Heating must continue until the reaction is complete. Which statement about the energy changes in this reaction is correct?
Energy is transferred from the furnace to the reacting chemical, so the products have more energy than the reactant.
Energy is transferred from the reacting chemical to the furnace, so the products have less energy than the reactant.
Energy is transferred from the reacting chemical to the furnace, so the products have more energy than the reactant.
Energy is transferred from the furnace to the reacting chemical, so the products have less energy than the reactant.
85 exam-style questions on AQA GCSE Chemistry 5.1 Exothermic and endothermic reactions, covering 5.1.1 Energy transfer during exothermic and endothermic reactions, 5.1.2 Reaction profiles, and 5.1.3 The energy change of reactions. Each one has a worked solution and a mark scheme showing where the marks go.