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In this activity, learners discover the primary physical properties used to separate pure substances from mixtures.

$1 - $5 per group Ages 8 - 18 1 to 7 days
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This activity was designed for blind learners, but all types of learners can use it to investigate heterogeneous and homogeneous mixtures and solutions, identify the differences, and explore the conce

$1 - $5 per student Ages 11 - 18 10 to 30 minutes