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Crystal Growing

4–8 yrs

Description

Grow sparkling crystals using borax to explore solubility and crystal formation, encouraging patience and observation of chemical processes.

Details

1. Dissolve 3 tablespoons of borax in 1 cup of hot water in a jar.
2. Tie a pipe cleaner to a pencil and shape it into a loop.
3. Hang the pipe cleaner in the solution, resting the pencil on the jar’s rim.
4. Let it sit overnight (away from children).
5. Observe the crystals formed on the pipe cleaner.
6. Discuss how crystals grow as the solution cools.

Materials

Borax, hot water, jar, pipe cleaner, pencil