A student investigates an exothermic reaction. Which row in the table correctly describes the temperature change of the surroundings and the energy involved in bonding?
Temperature of surroundings: increases; Bond energies: less energy is needed to break bonds in reactants than is released when making bonds in products
Temperature of surroundings: increases; Bond energies: more energy is needed to break bonds in reactants than is released when making bonds in products
Temperature of surroundings: decreases; Bond energies: less energy is needed to break bonds in reactants than is released when making bonds in products
Temperature of surroundings: decreases; Bond energies: more energy is needed to break bonds in reactants than is released when making bonds in products
15 exam-style questions on OCR GCSE Chemistry Energetics. Each one has a worked solution and a mark scheme showing where the marks go.