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    The Science House
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    In this chemistry activity, learners use the lowered freezing point of water to chill another mixture (ice cream) to the solid state. Learners will record the temperature of the ice before and...

    $1 - $5 per student Ages 6 - 18 10 to 30 minutes
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    American Chemical Society
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    In this activity on page 12 of the PDF, learners examine how recyclable materials are separated by various properties at recycling centers. Learners determine the density of various objects as well...

    $5 - $10 per student Ages 8 - 14 45 to 60 minutes
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    Oregon Museum of Science and Industry
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    In this chemistry lab activity, learners model the colors of fireworks by burning metallic solutions in a flame and observing the different colors produced. The color is determined by the...

    $5 - $10 per group Ages 14 - adult Under 5 minutes
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    Oregon Museum of Science and Industry
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    In this activity, learners will design a way to identify a powder found at a crime scene by comparing it with known powders, with the goal of solving a crime. Learners will describe the various...

    $10 - $20 per group Ages 8 - 11 45 to 60 minutes
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    American Chemical Society
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    In this activity on page 10 of the PDF, learners detect the amount of energy that can flow through a sodium chloride electrolyte solution with a light sensor. Learners construct an electrolyte...

    $5 - $10 per student Ages 8 - 14 45 to 60 minutes
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    NOAA
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    In this activity, learners observe how salinity affects the freezing point of water by making and enjoying ice cream. Pairs of learners will combine ingredients in a plastic bag and then add...

    $5 - $10 per group Ages 6 - 14 30 to 45 minutes
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    WGBH
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    This series of chemistry stations is designed to accompany the PBS documentary about African-American chemist "Percy Julian: Forgotten Genius." Each of the six stations features either a...

    $10 - $20 per group Ages 11 - adult 45 to 60 minutes
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    Mount Holyoke College
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    In this chemistry investigation, learners combine common cooking substances (flour, baking powder, sugar, salt, pepper, oil, water, food coloring) to explore mixtures. Both homogeneous (whole thing...

    $10 - $20 per student Ages 4 - 8 10 to 30 minutes
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    Institute of Physics
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    This is a highly visual demonstration that illustrates both the effects of density and chemical reactions. Like a density column, volcano eruption, and Alka-seltzer reaction all in one, learners...

    $1 - $5 per group Ages 4 - adult 5 to 10 minutes
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    The Exploratorium
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    In this activity, learners build a simple electrolysis device. Then learners use an indicating solution to visualize hydrogen and oxygen molecules in water.

    $5 - $10 per student Ages 11 - 18 45 to 60 minutes

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