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  • Mixtures, Melting Point, Freezing Point, Phase Changes, Freezing Point Depression | Middle School, High School

    Lab: How does Salt "Melt" Ice?

    In this lab, students will consider why salt is used to aide in snow clearing and to help keep icy roads safe. They will investigate how salt ‘melts’ ice and determine the best type of salt to do so. Additionally, students will explore the advantages and disadvantages of the various different types of salt.

  • Freezing Point, Phase Changes, Freezing Point Depression | High School, Middle School

    Lab: Freezing Ice Cream

    In this lab, students will investigate changing states of matter, chemical reactions, and the properties of ice and salt while creating their own ice cream.

  • Concentration, Solute & Solvent, Colligative Properties, Calorimetry, Heat, Specific Heat, Temperature, Freezing Point Depression, Error Analysis | High School

    Lesson Plan: The Hot and Cold of it All

    In this lesson students will analyze the effectiveness of different brands of antifreeze/coolants and their ability to protect an engine in cold climates. Students will conduct a lab investigation to examine the freezing point depression in samples that have been diluted with distilled water. Students will also determine the specific heat capacities of antifreeze/coolant products as compared to pure water and explain how it relates to thermal energy transfer in the internal combustion engine.

  • Density, Physical Properties, Mixtures, Solubility, Freezing Point, Polarity, Phase Changes, Intermolecular Forces, Colligative Properties, Intermolecular Forces, Freezing Point Depression, Mixtures | High School

    Lesson Plan: Fuel Line Antifreeze

    In this lesson students will explore the role of a gasoline additive, fuel line antifreeze (generally methanol or 2‑propanol), in reducing the potential of water to block fuel lines in freezing weather. Students will prepare test tube models of water-contaminated fuel tanks and explore the effect of adding different types of fuel line antifreeze. This lesson can be used to bolster concepts about miscibility, density, intermolecular forces, phase changes (freezing), and colligative properties (freezing point depression).

  • Physical Properties, Solubility, Freezing Point, Phase Changes, Physical Change, Solute & Solvent, Freezing Point Depression, Freezing Point | Elementary School

    Lesson Plan: Salting Roads in Winter

    In this lesson, students investigate how the freezing point of water changes when salt is added.

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