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Construct a simple battery that's able to power a small light or motor out of foil, salt water, and charcoal. A helpful video, produced by the Exploratorium, guides you along on this activity.

In this activity, high voltage is applied across a pickle to emit a yellow glow. This activity should only be conducted by skilled adults and is best suited as a demonstration.

Making liquids of different densities to perfectly lay on top of each other can be a frustrating exercise. The Exploratorium created this activity as a fool proof way of making a density column.

Build a hydrometer (measures the density of a liquid) using a pipet or eyedropper.

In this chemistry activity (page 1 of the PDF), learners will observe a physical change.

In this activity, learners design a crushing test and discover that identifying and controlling the variables may be difficult.

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