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In this easy chemistry activity, learners submerge pennies in different liquids (water, lemon juice, vinegar, liquid hand soap, salt water, and baking soda mixed with water) to observe which best clea

Some aquatic organisms live in open water, while some live in soil at the bottom of a body of water.

In this activity, learners add food coloring to hot and cold water in order to see how fluids at different temperatures move around in convection currents.

Some bugs can walk on the surface of a lake, stream, river, pond or ocean.