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Which Powder is It?
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In this chemistry challenge, learners identify an unknown white powder by comparing it with common household powders.
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.
The Liquid Rainbow
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Learners are challenged to discover the relative densities of colored liquids to create a rainbow pattern in a test tube.
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.
Plastic Milk: You can make plastic from milk
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In this activity (on page 2 of the PDF), learners make a plastic protein polymer from milk. Adding vinegar to milk causes the protein casein to solidify or curdle.
DNA Spooling: Isolate DNA from Onion Cells
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In this experiment, learners isolate Deoxyribonucleic Acid (DNA) from onion cells using a simple extraction procedure.
Big Things Come in Little Packages
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As a group, learners investigate three packages which are all the same size and shape, but have different contents. One is filled with foam, one is filled with wood, and one is filled with metal.
Mystery Writing: Write and develop a secret message
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Learners write an invisible message using lemon juice on a piece of paper. They then develop the message by soaking the paper in a dilute iodine solution.
Of Cabbages and Kings
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This lesson gives full instructions for making cabbage juice indicator, a procedure sheet for learners to record observations as they use the indicator to test materials, and extension activities to d
Matter of Degree
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In two separate bags, learners mix water with Epsom salts and detergent.
Be A Pasta Food Scientist
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In this activity, learners of all ages can become food scientists by experimenting with flour and water to make basic pasta.
Carrying Charges: Testing for Conductivity
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Learners are challenged to create solutions that conduct electricity and make a buzzer buzz (or an LED light up).
Recycling Paper
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In this crafty chemistry activity (on page 2 of the PDF), learners make their own paper from used paper they may have otherwise thrown away.