Why water is the essential solvent for life on Earth

Water as a solvent | Water, acids, and bases | Biology | Khan Academy · 9:11 · Video: Khan Academy · Watch at the source

In short: This video explores why water's unique chemical properties make it the primary medium for biological processes. You will learn how its molecular structure dictates what substances it can dissolve and how these interactions sustain living systems.

The lesson examines water as a universal solvent, focusing on its ability to interact with polar solutes. It distinguishes between hydrophilic substances, which are attracted to water, and hydrophobic substances, which repel it.

By understanding these chemical behaviors, learners can see how life functions from the atomic level up to complex ecosystems. The content is designed for high school or first-year college biology students.

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