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Metal Reactions
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This is written as a static display, but can easily be adapted to a hands-on experiment for learners to conduct.
Currently Working: Testing Conductivity
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Visitors test solutions of water, sugar, salt, and hydrochloric acid and the solids salt and sugar. They clip leads from the hand generator to wires immersed in each substance.
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.
Fireworks!
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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.
First Impressions
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Learners experiment with a commercial photo-sensitive paper (Sunprint® or NaturePrint® paper). They place opaque and clear objects on the paper and expose it to bright light, observing the results.
Power To Go
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Learners observe an electrochemical cell constructed from a small jar containing zinc and copper strips immersed in separate solutions. The strips are connected to a motor that turns a small fan.
Phase Changes
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Learners observe a sealed test tube containing a small amount of solid stearic acid.
Egg Osmosis
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Visitors observe three beakers. One beaker contains an egg immersed in vinegar. Visitors observe carbon dioxide gas escaping from the shell as the calcium carbonate reacts with the vinegar.
Changing Colors
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Learners experiment with a commercially available liquid-crystal coaster. They warm the material with their hands for varying lengths of time and observe the changing colors that result.
Choose Your Ooze
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During this activity, learners will make different versions of "ooze" using varied proportions of detergent and glue.
Lost Labels
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In this experiment, learners will conduct chemical and physical tests to identify mystery substances.
Bridge the Gap
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Learners work in groups to construct bridges using stale marshmallows and toothpicks.
Draggin' Boats
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Learners design, build, and test models of "dragon boats" made from up to three milk cartons.
It's a Gas!
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In this activity, learners explore two properties of gases: gases take up space and exert pressure. Learners assemble two flasks and a beaker, connecting them with stoppers and tubing.
Tie Dye Painting
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This is an activity exploring color and color mixing.
Make Your Own DNA
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Learners match puzzle pieces to outlines of a DNA strand. The puzzle pieces represent the four chemicals making up DNA base pairs: adenine, thymine, guanine, and cytosine.
Liesegang Rings
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This display shows slow chemical reactions in colorful crystal formations known as Liesegang Rings. These reactions are similar to those forming the rings in agates.
Crocodiles
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Learners observe and compare the sizes of three toy “growing” crocodiles made from water-absorbent polymers. One is it its original state, dry, hard, and about 10cm long.
A Matter of Splatter
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In this math-based activity, learners will experiment to find how height and angle affect spatter and then use this knowledge to solve a crime.
Silver Crystals
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This is written as a static display, but can easily become a hands-on experiment for learners.