splitting water

Encyclopædia Britannica, Inc.

Overview of water moving through the hydrologic cycle, or water cycle: it evaporates from Earth's surface as water vapor, which condenses in the atmosphere, forming clouds and precipitation, which falls to the land and flows through lakes, rivers, and oceans, from which water evaporates as the cycle repeats.

© American Chemical Society (A Britannica Publishing Partner)

Watch an experiment on dissolving the candy coating on M&M'S.

© American Chemical Society (A Britannica Publishing Partner)

An overview of the chemical structure of water molecules.

Contunico © ZDF Studios GmbH, Mainz

An explanation of why seawater is salty.