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In this activity, learners discover that as the salinity of water increases, the density increases as well. Learners prove this by attempting to float fresh eggs in saltwater and freshwater.

In this simple activity (on page 7 of the PDF), learners use water and liquid dish detergent to see which one removes lipstick better from an index card.

In this chemistry challenge, learners discover that many chemical reactions involve heat loss or gain.

In this chemistry activity, learners use spaghetti to explore density and chemical reactions.