When ice melts why doesn't the temperature rise?

Answer 1

From a macroscopic standpoint

When you add heat to the water/ice mixture the water will warm up a little bit. The warmer water melts a little ice, and the latent heat of the ice absorbs the extra heat.

From a microscopic standpoint

The slightly warmer (faster) water molecules bump into the ice, which knocks a few molecules off. The formerly frozen molecules have lower kinetic energy, so the average kinetic energy of the water drops back to the melting point of the ice.

Answer 2

Ice still has 80 calories/gram stored in it. This is called heat of fusion. It still has to be converted (melted) to liquid form before you can raise its temperature. And for it to change to liquid, it still has to give up energy equal to its mass x the heat of fusion.

Answer 3

The heat that is added to melt the ice is called the heat of fusion, and ALL of that energy goes into breaking bonds and turning the solid to the liquid, and NONE of it goes into raising the temperature of the system. Once the solid (ice) is converted to liquid water, then any added energy (heat) will be used to raise the temperature of the liquid until it reaches another phase change (100ºC) then the same thing happens before turning to a vapor (heat of vaporization).

Answer 4

When ice melts, the absorbed heat energy is used to break the intermolecular bonds holding the solid structure of ice together, rather than increasing the temperature of the ice. This is known as the latent heat of fusion, and it occurs at a constant temperature until all the ice has melted.

Answer 5

It takes energy to melt ice, so energy which otherwise would have produced an increase in temperature is consumed by the change of phase from solid to liquid.

Answer 6

No, The pure ice melts at 0, so if the Temperature of an ice cube is - 20 Degree Celsius and you heat it, Its temperature will rise and at 0, it will melt.

Answer 7

Heat is absorbed by the melting ice. When the ice is gone, temperature will begin to rise.

Answer 8

Ice melts in constant temperature