The boiling point is the temperature at which a liquid turns into vapor because its vapor pressure equals atmospheric pressure.
Why it matters:
- Different substances have unique boiling points used for identification
- Crucial in distillation, cooking, industrial processes, and chemistry
- Changes with altitude—lower pressure means lower boiling point
Examples:
- Water boils at 100°C at sea level
- At high mountains, it boils around 90–95°C
