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In this activity, learners discover the primary physical properties used to separate pure substances from mixtures.

Learners observe a bottle containing water and oil. They are invited to pick up the bottle and mix the contents together.

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.

In this activity, learners are asked to examine the differences between two materials in a pair.

Learners investigate the properties of the liquids in two bottles. One contains layers of oil and water, and one contains oil, water, and soap.

This hands-on experiment will provide learners with an understanding of the issues that surround environmental cleanup.

Learners use filter paper and water to analyze six different markers. They mark the paper with ink, and dip the paper in water. The water travels up the paper and dissolved ink travels with it.