Freezing point depression (freezing mixture)

Article no. P1045300 | Type: Experiments

10 Minutes
10 Minutes
grades 7-10

Also part of:

Student set Heat 1, TESS advanced Physics

Article no. 25274-88 | Type: Set

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Student set Heat 1 digital, TESS advanced Physics

Article no. 25274-88D | Type: Set


The ice is best crushed in a cloth so that individual pieces do not scatter.
In the first experiment the temperature of the ice water ϑ1 is generally between 2 and 3 °C. A temperature of 0 °C is achieved only after waiting a very long time. In the second experiment a temperature of under -10 °C is reached. Estimation of the temperature by extending the scale is sufficient for this qualitative experiment. If an exact temperature reading is desired, a thermometer with a scale which extends to at least -20 °C should be used.


  • Own construction of a calorimeter deepens the understanding
  • Student-suitable experiment descriptions with reports available

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