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Learners will compare the growth rate and appearance of crystals forming on small rocks to those growing on miscellaneous objects. Learners will also investigate how temperature (warm vs.

Learners observe a flask with a balloon attached over the mouth and inverted inside the flask.

In this activity, learners use heat to separate zinc and copper in a penny. This experiment demonstrates physical properties and how physical change (phase change) can be used to separate matter.

In this chemistry activity (page 1 of the PDF), learners will observe a physical change.

In this activity, learners discover that sand is the major ingredient in glass.