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In this activity, learners recrystallize substances from solutions and make observations about the resulting crystals. This test can help further identify the unknown.

$1 - $5 per group Ages 8 - 14 4 to 24 hours
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In this activity (on page 2 of the PDF), the learner places a golf ball between salt water and colored fresh water. The golf ball is not as dense as the saltwater.

$1 - $5 per student Ages 6 - 14 5 to 10 minutes
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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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Learners create hard water by mixing Epsom salt and water. Then they compare what happens when soap solution is mixed with hard water and regular water.

$1 - $5 per group Ages 6 - 14 30 to 45 minutes
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In this activity, learners measure the amount of carbon dioxide in a carbonated drink.

$1 - $5 per group Ages 11 - 18 45 to 60 minutes
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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
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This is an activity (located on page 4 of the PDF under What's Nano? Activity) about size and scale.

$1 - $5 per group Ages 8 - 14 1 to 2 hours
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This is a chemistry lab activity about solutions (page 7 of the PDF). Learners see firsthand how chemicals in a solution can combine to form an entirely different substance.

$1 - $5 per student Ages 8 - 18 10 to 30 minutes
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Learners mix a solution of luminol with hydrogen peroxide to produce a reaction that gives off blue light.

$1 - $5 per group Ages 4 - adult Under 5 minutes
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In this chemistry activity (page 3 of the PDF), learners will learn about crystals by growing their very own.

$1 - $5 per student Ages 6 - 14 1 to 7 days
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In this activity, learners use open inquiry to learn about the process of science as well as gain experience regarding the Law of Conservation of Mass, dissolution, and density.

$1 - $5 per group Ages 8 - 14 1 to 2 hours
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In this chemistry activity (on page 2 of the PDF), learners make a layered drink with liquids of different densities.

$1 - $5 per student Ages 6 - 14 5 to 10 minutes
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In this activity, learners perform a simulated blood test procedure.

$1 - $5 per group Ages 11 - adult 5 to 10 minutes
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In this activity, learners sublimate dry ice and then taste the carbon dioxide gas.

$1 - $5 per student Ages 11 - 18 5 to 10 minutes
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In this activity, learners apply a dissolving test to known crystals to identify the unknown. Since the unknown is chemically the same as one of the known crystals, it should dissolve similarly.

$1 - $5 per group Ages 8 - 14 10 to 30 minutes
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In this activity, learners investigate whether having sugar already dissolved in water affects the speed of dissolving and the movement of sugar and color through the water.

$1 - $5 per group Ages 8 - 14 30 to 45 minutes
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In this activity, learners mix several sugar solutions to investigate the property of density. Each sugar solution has a different density and color of the rainbow.

$1 - $5 per group Ages 8 - 14 30 to 45 minutes
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In this simple activity (on page 2 of the PDF), learners make a crystal garden using salt, water, and a brick.

$1 - $5 per student Ages 6 - 14 1 to 7 days
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Learners write or draw with white crayon on white paper. They look and feel to detect their marks on the paper. Then, learners paint over their paper with watercolor paint.

$1 - $5 per group Ages 4 - 14 Under 5 minutes
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In this activity, learners separate a mixture of pebbles, salt crystals, and wood pieces. They add water and pour the mixture through a strainer.

$1 - $5 per group Ages 4 - adult Under 5 minutes