Q:

Why is energy required for the boiling process?

A:

Quick Answer

Energy is required to boil a liquid in order to give the molecules enough energy to overcome intermolecular attraction forces. While boiling, the highest energy liquid molecules are able to escape the liquid and enter the gas phase.

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Full Answer

A substance can exist as a solid, liquid or gas. Solids are the lowest energy form, with molecules vibrating together and staying in contact. Liquids have more energy than solids, and while there are frequent particle collisions, they are able to slip by each other and flow. Gases have the most energy, with molecules being able to bound around and only infrequently colliding.

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Related Questions

  • Q:

    Why does water have a high boiling point?

    A:

    Water has a high boiling point because its molecules are bound together by hydrogen bonding, which is a very strong intermolecular force. It takes more kinetic energy, or a higher temperature, to break the hydrogen bonding between water molecules, thus allowing them to escape as steam.

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  • Q:

    What temperature is lukewarm?

    A:

    If the term lukewarm is in reference to a liquid like milk or water for a recipe, then this temperature is anywhere between 98 to 105 degrees Fahrenheit. This temperature also is comparable to combining one part of water that is at room temperature with two parts of boiling water. When preparing milk formula, lukewarm is usually the ideal temperature range.

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  • Q:

    How does the liquid in a glass thermometer work?

    A:

    The liquid in a glass thermometer, either colored alcohol or mercury, expands as it heats and condenses as it cools. In a thermometer, the liquid cannot expand outward and the only place it can go is up or down. Temperature on a glass thermometer can be measured in Fahrenheit, Celsius or Kelvin.

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  • Q:

    What is the melting point of metals?

    A:

    The melting point, also known as the freezing point, of a metal is the temperature at which it changes from a solid to a liquid. At the melting point, the substance is able to exist as both a solid and liquid in equilibrium.

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