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This article explores the use of heat pumps as a topic in chemistry education. Heat pumps are both politically controversial and provide an opportunity to teach students about energy principles. The article presents an experiment using a syringe filled with pentane to demonstrate the relationship between pressure and temperature. Safety precautions are emphasized due to the flammability and toxicity of pentane. The experiment aims to help students understand the operation of heat pumps and refrigerators. The article concludes by discussing the results of the experiment and the need for additional teaching approaches to enhance student understanding. [Extracted from the article]