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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.

In this activity, learners touch supercooled water drops with an ice crystal and trigger the water drops to freeze instantly.

In this activity, learners observe a quick phase change as water rapidly goes from a liquid state to a solid state.

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

Learners explore the variables that affect the properties of ice and the places where different types of ice are found.