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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.
Plant Power
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In this chemistry challenge, learners identify which plants have the enzyme "catalase" that breaks hydrogen peroxide into water and oxygen.
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.
Disappearing Statues
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In this activity (on page 8), learners model how marble statues and buildings are affected by acid rain.
Choose Your Ooze
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During this activity, learners will make different versions of "ooze" using varied proportions of detergent and glue.
Polishing Pennies
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In this experiment, learners try different liquids to see which ones clean pennies best. Liquids to try include water, lemon juice, cola, vinegar, and dishwashing detergent.
Fruit Juice Mystery
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In this chemistry challenge, learners work to figure out which of four juices are real, and which is just food coloring and sugar.
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.
Finding Red
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In this chemistry challenge, learners systematically investigate which combination of four solutions produces a deep red color.
Matter of Degree
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In two separate bags, learners mix water with Epsom salts and detergent.