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Earth Sciences 15 Online
OpenStudy (simplymarie_x):

4. Design an experiment that could be used to demonstrate a chemical or physical change. Explain what makes it a chemical or physical change and explain what happens to mass and energy 5. Design an activity that you could use to teach someone else about the laws of conservation of mass and energy.

OpenStudy (neonumbrella5115):

You could create an experiment where you test the effects of salt on the rate of evaporation. The physical change is when the water goes from liquid to gas.

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