A student mixes two solutions and records the temperature of the solution.
The temperature changes from 20.0 ∘C20.0\ ^\circ\text{C}20.0 ∘C before the solutions are mixed to 25.5 ∘C25.5\ ^\circ\text{C}25.5 ∘C afterwards. Explain what this change shows about the energy transfer during the reaction and the energy of the products compared with the reactants.
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.