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Which Powder is It?
Source Institutions
In this chemistry challenge, learners identify an unknown white powder by comparing it with common household powders.
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Curious Crystals
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Learners carefully look at four known household crystals.
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Crushing Test
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In this activity, learners design a crushing test and discover that identifying and controlling the variables may be difficult.
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Powder Particulars
Source Institutions
In this introductory activity and demonstration, learners are introduced to the concept that different substances react chemically in characteristic ways.