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Using Color to See How Liquids Combine
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Learners add different liquids (water, salt water, alcohol, and detergent solution) to water and observe the different ways the different liquids combine with water.
Make a Balance / Scale
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In this activity, learners create a kind of balance device using a wire coat hanger, some string, and paper cups.
Heavy Air
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In this activity and/or demonstration, learners illustrate visually and physically that air has weight. Learners balance two equally-inflated balloons hanging from string on a yard stick.
Salt Crystal Garden
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In this activity, learners will explore saturated solutions and discover how crystals form.
Red, White and Blue II Demonstration
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In this chemistry demonstration, learners investigate the rule "likes dissolve likes" by combining three, immiscible liquids to create a colorful density column.
Erupting Fizz
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This is a highly visual demonstration that illustrates both the effects of density and chemical reactions.
Build a Raft
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In this activity, learners explore density and buoyancy as they design and construct rafts.
Oil Spill Cleanup
This hands-on experiment will provide learners with an understanding of the issues that surround environmental cleanup.
Light and Sound
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In this four-part activity, learners explore light and sound through a variety of hands-on investigations.
Density Intensity
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In this activity on page 12 of the PDF (Rethinking the 3 R’s: It’s Easy to be Green), learners examine how recyclable materials are separated by various properties at recycling centers.
Density Rainbow
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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.
Make a Salt Volcano (Lava Lite)
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This activity about density provides instructions for making a miniature "lava lite" with just salt, oil, water, and food coloring.
Density Rainbows
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In this activity, learners explore the concept of density by pouring 5 different liquids into a jar. Food coloring is added if needed to give each liquid a distinct color.
Mass of the Earth
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In this activity, learners use basic measurements of the Earth and pieces of rock and iron to estimate the mass of the Earth.
Turning the Air Upside Down: Warm Air is Less Dense than Cool Air
Learners cover a bottle with a balloon. When they immerse the bottle in warm water, the balloon inflates. When they immerse the bottle in a bowl of ice, the balloon deflates.
Weather Stations: Winds
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In this activity, learners use a toaster to generate wind and compare the appliance's heat source to Jupiter's own hot interior. Learners discover that convection drives wind on Jupiter and on Earth.
Bubble Suspension
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In this activity, learners observe as soap bubbles float on a cushion of carbon dioxide gas. Learners blow bubbles into an aquarium filled with a slab of dry ice.
Build A Hydrometer
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In this activity, learners will explore how a hydrometer works by building a working model and conducting experiments.
Glitter Globe
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This activity shows learners (with adult supervision) how to make a Glitter Globe, a fabulous toy that shimmers when you shake it.
Challenge: Microgravity
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In this activity about the circulatory system and space travel (on page 38 of the PDF), learners use water balloons to simulate the effects of gravity and microgravity on fluid distribution in the bod