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After reading Section 10.2, you should know: properties of a liquid the difference between the terms evaporation, vaporization and condensation how the boiling point is affected by pressure. The Nature of Liquids Section 10.2. Liquids.

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The Nature of Liquids Section 10.2

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The nature of liquids section 10 2

  • After reading Section 10.2, you should know:

  • properties of a liquid

  • the difference between the terms evaporation, vaporization and condensation

  • how the boiling point is affected by pressure

The Nature of LiquidsSection 10.2


Liquids

Liquids

Intermolecular forces - attraction between molecules of a liquid

What’s the difference?

Vaporization -

Evaporation -

when a liquid changes into a gas

when a liquid changes into a gas at the surface of the liquid when the liquid is not boiling


Evaporation

Evaporation

  • Can only occur in an open container

  • In a closed container, the liquid and gas molecules establish equilibrium

http://www.lmpc.edu.au/Resources/Science/water_animations/equilibrium1.htm


Boiling point bp

Boiling Point (bp)

  • Temperature at which liquid molecules obtain enough kinetic energy to vaporize

  • A substance’s bp can change based on a change in pressure

    • If the atmospheric pressure less, than the boiling point of the liquid is lower than it’s normal bp

      • Water will boil around 90-95 degrees in the mountains because the pressure is less


After reading section 10 2 you should know

After reading Section 10.2, you should know:

  • properties of a liquid

  • the difference between the terms evaporation, vaporization and condensation

  • how the boiling point is affected by pressure


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