An industrial chemist is investigating the temperature change during the exothermic dissolution of anhydrous calcium chloride in water.
Explain why a polyurethane-insulated flask is a more suitable container to use for this experiment than a standard borosilicate glass beaker.
94 exam-style questions on Edexcel GCSE Chemistry 8.2 Heat energy changes in chemical reactions, covering 8.2.1 Exothermic and endothermic changes, 8.2.2 Bond breaking, bond making and overall energy change, 8.2.3 Calculating energy change from bond energies, and 8.2.4 Activation energy and reaction profiles. Each one has a worked solution and a mark scheme showing where the marks go.