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In this chemistry activity, learners explore density by using four solids and 6 liquids to create colorful, layered rows.

$1 - $5 per group Ages 6 - 18 5 to 10 minutes
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Learners make a mobile model of a carbon atom using clay, wire, and pipe cleaners.

$1 - $5 per student Ages 8 - 18 30 to 45 minutes