Is pure water colorless?

Discover why the sky is blue and the sunset is red.

Objects change size when heated or cooled.

Discover why your favorite cat videos don't leak out of optical fibers.

Submerge yourself in underwater color perception.

Construct a simple hydrometer to compare the densities of solutions.

Just spew it—build your own cyclic hot water fountain.

Use electricity to break water into its elemental components.

Break water into hydrogen and oxygen with a simple device.

Get Bach to the fundamentals.

Graphing can be a slippery slope to understanding.

Put a new twist on pressure changes.