The latent heat of fusion
The latent heat of fusion
The latent heat of fusion
The energy required to melt a substance. (Apex)
The process of going from a solid to a liquid is called melting. When heat is applied to a solid, such as ice, it turns into a liquid form, which is water.
The energy required to go from a solid to a liquid-Apex
Solid, because it goes through a longer process than the Liquid. Thus, the Liquid doesn't need as much energy as a solid.
The energy needed to go from a liquid to a gas is referred to as heat of vaporization.
gas to liquid = condensation liquid to solid = freezing the gas must go through a liquid state, Even if for a millisecond.
A solid has the most energy, it is the most tightly packed, then a liquid as the particles have more space, then a gas as the particles are free and there are less of them. Hope this helps. if you go to google images, you will also know what I mean
sublimation
There is no fixed speed for the transition of a substance from the solid phase to the liquid phase. The maximum speed this can happen at is the speed of light as this is how fast the energy can be transferred to a molecule, and there is no minimum speed. Some substances do not melt into a liquid. Instead they make the transition straight from solid phase into gas phase, and this is called sublimation.
A gas has more heat energy, often called thermal energy, than a liquid, even if both the liquid and gas are at the same temperature. Consider that the gas molecules have more thermal energy than liquid molecules of that same substance. The gas molecules are "free" to move around more because they have more kinetic energy than molecules of the liquid. And kinetic energy is function of thermal energy. If we consider the case of water molecules to illustrate our point, when a pan of water is boiling, the water molecules escaping the pan as a gas have more kinetic energy than the ones making up the liquid water that is still in the pan. Also consider the case of water that is evaporating. Wet your finger and blow on it. The liquid water on your finger cools as the evaporating water molecules take thermal energy from that liquid to make their change of state possible. It takes an increase of thermal (heat) energy to change a liquid into a gas.