In this activity on page 6 of the PDF (Chemistry—It’s Elemental), learners explore some of the properties of copper using a few common household ingredients. Learners compare four liquids and their ability to clean copper pennies. Use this activity to introduce learners to acids and oxidation reactions.
Safety notes: Chemical protective goggles MUST be worn while doing this activity. Adult supervision is required. Follow Milli's safety tips on page 5.