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The main difference between boiling and evaporation is that boiling is much faster. Boiling also often takes place at the bottom of the fluid (where the heat source usually is) whereas evaporation takes place only at the surface. So boiling can produce bubbles, while evaporation doesn't.

Evaporation is the process by which molecules in a liquid state (e.g. water) spontaneously become gaseous (e.g. water vapor), without being heated to boiling point. It is the opposite of condensation. Generally, evaporation can be seen by the gradual disappearance of a liquid, when exposed to a significant volume of gas.

Boiling is very rapid evaporation starting within a container of water.

Normally evaporation occurs at a much slower rate than boiling because most evaporation occurs with room temperature water.

Boiling occurs only when the liquid is heated to the boiling point, and vapor bubbles come from the bulk of the liquid. In evaporation, vaporization occurs only at the surface of the liquid, not throughout the liquid, and this occurs at lower temperatures.

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11y ago
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12y ago

when water evaporates, it heats, the molecules move faster, so the water turns into tiny water droplets not visible to the naked eye. this doesn't happen when water boils, but water can still evaporate while boiling.

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Q: What is the main difference between boiling and evaporation?
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