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Lesson Plan: Measuring Enthalpy Changes Chemistry • First Year of Secondary School
This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to perform calorimetry experiments and use the results to calculate the enthalpy change for a chemical reaction.
Objectives
Students will be able to
- describe the setup of calorimetry experiments,
- understand the different types of reactions that calorimetry can be used for,
- identify problems with described calorimetry experiments and explain their effects on the results,
- use experimental values and the formula to calculate , the heat energy transferred,
- calculate the values of , , , or when the other values are given,
- use tabulated or graphical data to calculate , where and are already known (e.g., reactions in water),
- calculate the molar enthalpy change, , from the heat energy transfer, .
Prerequisites
Students should already be familiar with
- energy changes in reactions and changes in enthalpy (),
- exothermic and endothermic reactions.
Exclusions
Students will not cover
- thermodynamics,
- detailed mathematical derivation/background,
- differential scanning calorimetry.
