Changing the Density of a Liquid - Heating and Cooling

During a unit on density, pupils ponder whether or not temperature affects this property. By carefully inserting blue cold water and yellow hot water into a room-temperature sample, they will see the answer. Make sure to have done the preceding lessons so that learners already know that liquids layer according to density. 

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Pros

  • Fits nicely into this point in the unit investigation on density
  • Beautiful and comprehensive teacher's materials are provided in the lab manual
  • An engaging and very visual demonstration of concepts
Cons

  • None