Q:

Why doesn't convection occur in solids?

A:

Quick Answer

Convection does not occur in solids because the particles within are too tightly packed to facilitate the process. Convection requires actual movement between the particles within a substance in order to transfer heat which is only possible in a fluid state of matter such as liquid or gas.

Know More

Full Answer

In convection, heat is transferred through the mass motion of a fluid. This movement creates heat currents that draw heat in specific directions and allow it to circulate throughout the systems. Liquid and gaseous substances have particles that are free flowing within the substance and allow the currents to travel through without disrupting the overall state of matter. Solids are composed of particles that are tightly packed and do not allow for much motion other than wiggling and collision.

Solid substances can transfer heat through conduction. Conduction is the process by which agitated particles in substance collide with nearby particles and pass on their energy. Liquids and gases can also transfer heat through conduction, but they are less efficient at the process because it requires direct contact and collision between particles. The thermal conductivity is related to electrical conductivity and both can vary greatly depending on the chemical compounds or elements, although generally speaking the best conductors of both are metallic compounds.

Learn more about States of Matter

Related Questions

  • Q:

    What are total soluble solids?

    A:

    Total soluble solids are solids that are dissolved within a substance. A common total soluble solid is sugar. The technique of measuring the concentration of total soluble solids is called refractometry, and it is used extensively in the food industry.

    Full Answer >
    Filed Under:
  • Q:

    How does temperature affect the rate of dissolving?

    A:

    Whether the solute is a solid or gas, its solubility in water is dependent on temperature such that an increase in temperature can make solids more soluble while gases become less soluble. This means that if the temperature of water is increased by heating it, then the solid solute will dissolve more quickly. However, for gases dissolved in water, the reverse occurs and solubility decreases with an increase in water temperature.

    Full Answer >
    Filed Under:
  • Q:

    Why do solids, liquids and gases expand when heated?

    A:

    Most solids, liquids and gases expand when they are heated because the molecules that make up the substance move more rapidly, which puts more distance between each of the molecules. This property of matter hold true irrespective of the state of matter in most cases. There are exceptions to this general rule; water, for example, expands when it transitions from liquid to solid form.

    Full Answer >
    Filed Under:
  • Q:

    Which state do most metals exist in at room temperature?

    A:

    Most metals are solids at room temperature as they have high melting points. Mercury is the only metal that occurs in liquid form at this temperature.

    Full Answer >
    Filed Under:

Explore