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Showing results 1 to 18 of 18
Divers
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Learners experiment with a 2-liter plastic bottle containing water and four “divers." The divers consist of open, transparent containers with the opening points downward.
Odors Aloft
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Learners smell balloons filled with different scents to guess what's inside. From this, they infer the presence and motion of scented molecules.
DNA Extraction
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Learners use a simple process to extract DNA from strawberries.
Shake It Up!
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Learners observe a sealed container holding a clear colorless liquid. They shake the container and the fluid turns blue. When allowed to sit for a few moments, the fluid turns colorless again.
In the Toilet
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This activity explores the basic workings of a siphon, which is the core technology that makes toilets work.
Salting Out
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In this activity, learners create a mixture of water, alcohol and permanent marker ink, and then add salt to form a colored alcohol layer on top of a colorless water layer.
To Dye For
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Learners add two dyes to mineral oil and water, and then compare their miscibility (how well they mix) in each.
Acid Rain
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In this chemistry demonstration, acid rain is simulated in a petri dish.
Wingin' It
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Learners explore the Bernoulli effect by building an airfoil (airplane wing) and making it fly.
Lost Labels
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In this experiment, learners will conduct chemical and physical tests to identify mystery substances.
Inner Space
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In this activity, learners discover that there is space between molecules even in a cup "full" of water. They first fill a cup with marbles, and then add sand to fill the gaps between the marbles.
Layers of Liquids
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Learners pour equal amounts of coffee, mineral oil, corn syrup, and alcohol into a beaker. The liquids resolve into stacked layers, and learners can infer which liquids are the most and least dense.
Color Me Blue
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In this activity, learners add dilute bleach solution to water that has been dyed with yellow, blue, and green food color.
Floating Golf Ball
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Visitors observe a graduated cylinder with a golf ball floating about halfway in liquid. The bottom half of the cylinder contains a concentrated solution of salt.
Reaction: Yes or No?
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In this activity, learners mix ingredients in a plastic bag, and then identify three characteristics of a chemical reaction: production of heat, color change, and production of a gas.
Swirling Milk
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In this chemistry activity, learners prepare two petri dishes, one filled with water and one filled with milk.
All Mixed Up!
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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.
Acid Rain Eats Stone!
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This display shows the dangers of acid rain on buildings and other structures as two concrete bunny rabbits are disintegrated by sulfuric acid. Learners scrape chalk onto the concrete bunnies.