Q:

What happens to iodine when you heat it up?

A:

When iodine is heated, it sublimes. Sublimation is the process in which a solid substance surpasses the liquid phase and turns directly into gas when heated. Solid iodine can still be turned into liquid form by using controlled heat and a precise amount of atmospheric pressure.

Know More

Full Answer

The molecular properties of a compound determine its reaction when subjected to heat or cold. Although atoms within an iodine molecule pull closely together by a covalent bond, the molecules have very weak interactions with each other known as van der waals forces. Owing to the fragility of these Intermolecular forces, iodine crystals succumb easily when heated and break into a thick purple colored vapor.

Learn more in States of Matter

Related Questions

  • Q:

    What happens when water freezes?

    A:

    When water freezes, the molecules slow down and assume a fixed position, although not quite in the way that one might think. Water is made of molecules with two hydrogen atoms and an oxygen atom, but those molecules don't just stop moving as units. One would think they would all stop, because the Third Law of Thermodynamics says that entropy drops with temperature, getting close to zero. However, ice does not show that property, which is one reason why ice is the only solid less dense than its liquid state.

    Full Answer >
    Filed Under:
  • Q:

    What happens when water vapor cools?

    A:

    When water vapor cools, it condenses. It is a phase change where water changes from a gas to a liquid. Condensation is the opposite of evaporation.

    Full Answer >
    Filed Under:
  • Q:

    What happens during evaporation?

    A:

    During evaporation, water rises into the atmosphere and condenses into clouds. When the clouds absorb too much moisture and become heavy, the moisture falls to the ground in the form of precipitation. This is known as the water cycle, which involves evaporation, condensation and precipitation.

    Full Answer >
    Filed Under:
  • Q:

    What happens when a gas is heated?

    A:

    When a gas is heated, its molecules start moving at a much faster speed and this consequently causes an increase in pressure within the container holding the gas. If the container is not strong enough, the activity of the gas molecules is likely to cause it to burst.

    Full Answer >
    Filed Under:

Explore