A student adds a piece of magnesium ribbon to dilute hydrochloric acid in a test tube. The test tube becomes warm.
Give the type of reaction that is taking place, exothermic or endothermic.
Describe the energy transfer that takes place during this reaction.
Name one other type of reaction that transfers energy to the surroundings.
39 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.