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Acid (and Base) Rainbows
Learners use red cabbage juice and pH indicator paper to test the acidity and basicity of household materials. The activity links this concept of acids and bases to acid rain and other pollutants.
Jet Propulsion
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In this two-part activity, learners work in pairs to examine the four basic stages of a turbine engine.
Mold Mole Molds
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In this activity, learners make different shapes that hold exactly one mole of gas (air).