Noun
melting point- The temperature at which the solid and liquid phases of a substance are in equilibrium; it is relatively insensitive to changes in pressure
Read full definition at wiktionary.org
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Fundamentals
This entry is from Wikipedia,the leading user-contributed encyclopedia.It may not have been reviewed by professional editors(See full disclaimer)
- 1.Melting point - Wikipedia, the free encyclopedia
- The melting point of a solid is the temperature at which the vapor pressure of ... At the melting point the solid and liquid phase exist in equilibrium. ...
- http://en.wikipedia.org/wiki/M
elting_point
- 2.melting point: Definition from Answers.com
- melting point n. ( Abbr. mp ) The temperature at which a solid becomes a liquid at standard atmospheric pressure ... The melting point of solid water (ice) is ...
- http://www.answers.com/topic/m
elting-point
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Melting point?
What can affect the melting
point?
I know that if the substasnces
vary in size, the melting
point would change since if
the substance is bigger it
melts slower and a smaller
substance will melt faster.
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If there are impurities in the substance, they will lower the melting point. |
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What is the melting point of a Compound A has a melting point
of 135-137 'C, so does
Compound B.
The mixture is 50:50.
At what temperature would one
anticipate the sample to melt?
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135-137'C. Unless it freezes into a solid block or else explodes. |
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Why does iodine have a higher For iodine: Boiling point: 184
Melting point: 114
For water: Boiling point: 100
Melting point: 0
For methane: Boiling point:
-161.5
Melting point: -182.5
How come there is such a large
difference when all of them
are simple molecular
structures? I would appreciate
it if anyone can explain it to
me. Thnx in advance.
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iodine is a diatomic element, so the molecular weight is 126.9*2 = 253.8, it is very heavy. it has a polarized electron cloud, so the London forces between iodine (I2) molecules are much stronger than in many compounds. the molecular weight of water is only 18.1, the intermolecular forces that gives it such a high boiling point are hydrogen bonds. so, the question should ask why water has such a high boiling point, not why iodine has high boiling point. consider the molecular weight, the boiling point of iodine is actually quite low. methane is light, it is also nonpolar, that's why it boils at a very low temperature. |
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