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Plaster of Paris
Source Institutions
In this activity (page 6 of the PDF), learners will observe both a chemical and a physical change.
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Chromatography
Source Institutions
In this activity (page 3 of the PDF), learners will observe a physical change.
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Sugar/Salt Crystals
Source Institutions
In this chemistry activity (page 1 of the PDF), learners will observe a physical change.