when we supply heat to ice the temperature increases till the melting point is reached and then remains constant until all the ice has melt. why? what is latent heat ?
2007-04-06 04:16:42 · 3 answers · asked by sugita j 1 in Science & Mathematics ➔ Chemistry
The temperature remains constant, because all of the heat that you add to the ice is going into breaking the bonds between the molecules of solid ice, converting it into liquid water. Only when you have added enough heat to melt all of the ice will the temperature begin to increase again.
2007-04-06 04:22:01 · answer #1 · answered by hcbiochem 7 · 1⤊ 0⤋
It is not constant. Pressure lowers the melting point. That is why you can ice skate. The weight on the blade creates sufficient pressure where it contacts the ice to lower the melting point, causing the ice to melt at the contact point. The water formed between the edge of the skate and the ice surface provides a nearly frictionless movement so the skater flies across the ice.
2007-04-06 12:12:35 · answer #2 · answered by Robert J 2 · 1⤊ 0⤋
because the energy needed to unfreeze the ice can not be used to raise the temperature as it is already used to unfreeze the ice.
2007-04-06 11:23:03 · answer #3 · answered by gjmb1960 7 · 1⤊ 0⤋