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a liquid turns into a gas faster if the size of the surface area of the liquid is... what?

A liquid turns into a gas faster when the size of its surface area is increased.

Key idea

  • Evaporation happens at the surface of a liquid, so the more surface that is exposed to the air, the more particles can escape into the gas phase at any moment.
  • Spreading the same amount of liquid out into a wide, shallow layer (bigger surface area) makes it evaporate faster than keeping it in a narrow, deep container (smaller surface area).

One-line answer (exam style)

  • A liquid turns into a gas faster if the size of the surface area of the liquid is increased.

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