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Transcription
In episode 2 of Quantum Conversations, host Alden O'Keefe discusses the chemistry of materials. He interviews scientist Harold O'Keefe who explains what a heating curve is. A heating curve shows how a solid turns into a liquid and then transitions into a gas. As a solid heats up, it gains kinetic energy while the potential energy remains the same. During the phase change to a liquid, potential energy increases while kinetic energy stays the same. The liquid continues to heat up, gaining more kinetic energy, while potential energy remains constant. Another phase change occurs when the liquid changes to a gas and gains potential energy. The gas then gains kinetic energy and remains a gas until it cools down. Welcome back to episode 2 of Quantum Conversations with me, your host, Alden O'Keefe. On today's episode, we will be talking about the chemistry of materials. As always, we have a lucky fan with us today. How are you doing today, Abner? I'm doing great, and so excited to be on such a great show. Well, we are happy to have you. I am on the phone right now with world-renowned scientist Harold O'Keefe. Do you have any questions for him, Abner? Yes! Can you explain to me what a heating curve is? Of course. A heating curve is a way to show how a solid turns into a liquid and then transitions into a gas. A solid heats up in a pan and starts to gain kinetic energy, and the potential energy stays the same. There is a phase change where the solid turns into a liquid and starts to gain potential energy, while the kinetic energy stays the same. Then the liquid keeps heating up and gains more kinetic energy, whereas the potential energy stays the same. Next, there is another phase change where the liquid changes to a gas and gains potential energy. Then the gas just keeps gaining kinetic energy and stays a gas until it cools down again.
