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Boiling Point
The temperature at which the vapor pressure of a liquid equals the external or atmospheric pressure.
Boiling Process
Bubbles of vapor form throughout the liquid and rise to the surface.
Atmospheric Pressure
A higher external pressure increases the boiling point of a liquid.
Normal Boiling Point
The temperature at which the liquid���s vapor pressure equals 1 atm (760 mmHg).
Condensation
The gas releases energy and turns into liquid.
Pure Substances vs
Pure substances have characteristic sharp boiling points, while mixtures have broad boiling ranges.
Boiling Point of Water
Pure water boils at 100°C at 1 atm.
Factors Affecting Boiling Point
The molecular structure and intermolecular forces of the substance directly affect the boiling point.