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  • Boiling Point vs. Evaporation: When Does a Liquid Turn into a Gas?
    No, a liquid doesn't need to reach 100 degrees Celsius (the boiling point of water) to become a gas. Here's why:

    * Evaporation: Liquids can turn into gas at temperatures below their boiling point through a process called evaporation. This happens when molecules at the surface of a liquid gain enough energy to break free and escape into the air. Think of a puddle drying up on a warm day, even if the air temperature isn't 100°C.

    * Boiling Point: The boiling point is the temperature at which a liquid's vapor pressure equals the surrounding atmospheric pressure, allowing bubbles of vapor to form within the liquid. However, liquids can still evaporate at temperatures below this point.

    * Different Liquids: Different liquids have different boiling points. For example, rubbing alcohol has a much lower boiling point than water.

    In summary: While reaching the boiling point leads to rapid and vigorous vaporization, liquids can transition into gas at temperatures lower than their boiling point through evaporation.

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