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Floating Coal: A Density Experiment
Students determine the amount of clean coal in a sample by separating the mineral matter from the clean coal. They compare the test sample with a control sample.
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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...
3rd - 8th Science