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        3-8

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        Mystery Mud: Exploring Changes in States of Matter

        Many of us have seen water change from a solid to a liquid and from a liquid to a gas, and we know that other substances undergo similar transformations (although often under more extreme conditions). What these changes have in common is a change in temperature, a result of either heating or cooling. In this video segment, produced for Teachers' Domain, students visit a lab at the Massachusetts Institute of Technology where scientists study a substance that changes state without a change of temperature.

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