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In this easy chemistry activity, learners submerge pennies in different liquids (water, lemon juice, vinegar, liquid hand soap, salt water, and baking soda mixed with water) to observe which best clea

In this chemistry activity (page 3 of the PDF), learners will learn about crystals by growing their very own.

In this simple activity (on page 2 of the PDF), learners make a crystal garden using salt, water, and a brick.