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In this fun, hands-on autumn activity, learners experiment to discover whether the colored substances in leaves can be separated from the leaves.

Learners add two dyes to mineral oil and water, and then compare their miscibility (how well they mix) in each.

You just ate a big meal and feel heartburn coming on. You take an antacid and feel better. Why? Heartburn is caused by stomach juice (an acid) burning the esophagus.

In this two-part activity about luminescence, learners explore the chemistry that happens inside glow sticks and other light producing reactions.