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Water Ways
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In this activity (on page 2 of the PDF), learners explore surface tension by adding pennies to cups which are "full" of plain water or soapy water.
Miscibility
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Learners observe a bottle containing water and oil. They are invited to pick up the bottle and mix the contents together.
Iron in the Environment
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In this chemistry activity (on page 2 of the PDF), learners corrode a penny in a cup with vinegar, salt water, and a source of iron (nails, paper clips, or twist ties).