??? Im wayyy confused.
2006-10-29 05:48:52 · 6 answers · asked by AlexisB 1 in Science & Mathematics ➔ Chemistry
The 'freezing point' and 'melting point' both refer to the same temperature. When a substance freezes, it goes through a basic change in its molecular structure, at its freezing temperature. When it melts, the change in its structure reverses back to its original liquid molecular structure, at the same temperature. Essentially, without ever changing the temperature, a substance could go from a liquid molecular structure to a solid molecular structure and back again as many times as you would like. The freezing / melting point is simply the temperature at which this is possible (at a particular pressure.) There is no hard reason why it must have two names, it is simple convention to call it the 'melting point' if it is melting and the 'freezing point' if it is freezing.
2006-10-29 06:02:06 · answer #1 · answered by locke9k 2 · 1⤊ 0⤋
It's just going in the opposite direction. When radon (or any other substance) is solid and becoming a liquid, it's melting. When radon is liquid and becoming a solid, it's freezing. Both have to occur at the same temperature.
2006-10-29 14:04:46 · answer #2 · answered by quepie 6 · 0⤊ 0⤋
melting and freezing are opposite. True.
But melting and freezing start at the same temperature and then move in oppsite directions.
for example,
water melts as well as freezes at 0 degrees Centigrade. When it melts, it becomes a liquid and when it freezes it becomes a solid.
But when it melts its temperature rises from 0 to 10 to 20 and so on. When it freezes, its temperature drops from 0 to -10 to -20 and so on.
2006-10-29 13:55:33 · answer #3 · answered by silver_sunil 1 · 1⤊ 0⤋
Water freezes at O degrees and ice melts at 0 degrees - you don't have any problem understanding that!
2006-10-29 13:54:07 · answer #4 · answered by JJ 7 · 0⤊ 0⤋
Radon is a radioactive gas that is used in the treatment of cancer. The BP and FP are different, although very close. You can find out all you want to know by following the link supplied.
2006-10-29 13:58:28 · answer #5 · answered by God all Mighty 3 · 0⤊ 1⤋
They are not the same. This never true not in liquids or gases or solids.
Ra: Melting point, 202.2 K, Boiling point, 211 K
2006-10-29 13:52:45 · answer #6 · answered by greenwhitecollege 4 · 0⤊ 2⤋