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A Little Drop of Water: Cohesion
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Learners explore water's property of cohesion through two investigations.
Collect Oxygen Over Water
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In this activity, learners use a pneumatic trough (see related activity) to generate and collect pure oxygen.
Lifting Lemon
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In this physics demonstration, learners will be surprised when a lemon slice appears to magically levitate within a pint glass.
Having a Gas with Water
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In this activity, learners construct a simple electrolysis device. With this device, learners can decompose water into its elemental components: hydrogen and oxygen gas.
Cohesion Coin
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In this activity about the property of water (page 6 of the PDF), learners use a coin to demonstrate cohesion between water molecules, exploring the molecular forces that allow water molecules to "