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Exploring Baking Powder
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In this activity, learners examine baking powder, a combination of three powders: baking soda, cream of tartar, and cornstarch.
Investigating the Line
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In the related activity called "Colors Collide or Combine," learners are intrigued by the apparent "line" that forms where colors from M&M coatings meet but do not mix.
Secret Goldenrod Messages
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In this activity, learners write invisible messages on goldenrod paper, and make the message appear and disappear using acids and bases.
Condensation
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In this activity, learners explore the process of condensation.
Developing Tests to Distinguish Between Similar-Looking Unknowns
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Learners identify an unknown liquid by comparing its behavior to known liquids. Learners drop liquids onto different surfaces and see how the liquids behave.