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    The Exploratorium
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    This is an activity about acid-base reactions using eggs and vinegar. Learners place eggs inside a container of vinegar and leave to soak overnight. The calcium carbonate of the shell reacts with...

    1 cent - $1 per group Ages 11 - 18 10 to 30 minutes
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    The Exploratorium
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    Learn about chemical reactions by making a Bubble Bomb, a plastic bag you can pop with the power of fizz. The bubbles in the Bubble Bomb are filled with carbon dioxide, a gas that forms when...

    1 cent - $1 per student Ages 4 - 11 10 to 30 minutes
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    In this activity, learners conduct an oxidation experiment that turns old pennies bright and shiny. Learners soak 20 dull, dirty pennies in a bowl of salt and vinegar for five minutes. They rinse...

    $1 - $5 per group Ages 8 - 14 1 to 2 hours
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    In this chemistry activity, learners explore the amount of copper in a new penny. Learners use toilet bowl cleaner to hollow out the interior of a penny with zinc inside. This experiment will...

    $1 - $5 per student Ages 11 - 18 1 to 7 days
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    In this activity, learners try to figure out who has their matching rock type by reading a description of their rock (no talking!). This activity can be used in a variety of ways: to introduce...

    $10 - $20 per group Ages 8 - 18 45 to 60 minutes
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    Ocean acidification is a problem that humans will have to deal with as we release more and more carbon dioxide into the atmosphere. This activity demonstrates how water can become acidic with the...

    $1 - $5 per student Ages 8 - 18 5 to 10 minutes
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    Ocean acidification is a big issue due to the amount of carbon dioxide humans release. CO2 in the atmosphere is absorbed into the ocean thus changing its acidity. The more acidic the ocean becomes,...

    $1 - $5 per student Ages 11 - 18 10 to 30 minutes
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    In this activity, learners calculate the percentage of oxygen in the atmosphere by using steel wool's ability to rust. Learners measure the volume of a test tube with a small amount of steel...

    1 cent - $1 per student Ages 11 - 18 1 to 7 days
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    In this activity, learners light an LED with five cents. Learners use two different metals and some sour, salty water to create a cheap battery. Learners also have the option of checking the...

    1 cent - $1 per student Ages 8 - 18 10 to 30 minutes