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2012-02-16 17:29:42
2012-02-16 17:29:42

Impurities can increase or decrease the melting and boiling points of substances depending on what the impurity is.

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impurities lower the magnitude of melting point of as substance. And it increases the magnitude of boiling point.


the presence of impurities decrease the melting or freezing point of water but the nonvolatile impurities increase the boiling point and volatile impurities decrease the boiling point of water


According to RAOULT, when two different metals of different melting points are melted or alloyed there melting points considerably change. So,according to the percentage of impurities, the melting points either increase or decrease.


The presence of the impurities will cause the boiling points to rise (also the melting points to fall). When you add the impurities, the substance doesn't remain pure affecting the boiling point to increase because now, more energy is required to boil the liquid with impurities. The melting points fall because impure substances require less energy to separate the particles.


chloride isn't a thing on its own and the melting and boiling points of chlorine and magnesium will have no effect on the boiling and melting point og magnesium chloride.


Impurities raise the boiling point of liquids.


Not all compounds have high melting points and high boiling points.


A pure substance generally has fixed melting and boiling points. Note it must melt or boil without decomposition. The measured values can be used as a guide to identification. Remembering that impurities depress the melting point and elevate the boiling point the "sharpness" of the melting/boiling point is an indication of purity.


The boiling and melting points of pure substances vary based on the substance. Gasses for example have lower boiling and melting points than metals.


Melting and boiling points are different for each compound or element.


No. The melting and boiling points of liquids vary considerably.


The purpose of distillation is to remove impurities by heat. It would make the water purer because the impurities have different boiling (or even melting points) than that of water.


Solids have higher melting and boiling points than liquids and liquids have higher melting and boiling points than gases.


A certain substance has certain melting and boiling points which is what helps identify a substance.


Impurities may lower or rise the boiling and melting points of a substance. It just depend on which impurities and what substance. These days we use "impurities" mixed into metals in order to enhance certain properties. In the world of electronics we do our soldering with soldering wire. This is a mix of many metals. A mix of Tin, Silver and Copper (SnAgCu) has a melting temperature of 222°C, compared to the regular Tin and Lead (SnPb) which melts at 183°C. Tin, Lead, Silver and Copper all separately have a higher melting point than when mixed together.


They have high melting points and very high boiling points


Compounds with strong intermolecular forces have higher melting and boiling points.




melting: 115.21 ºC boiling: 444.6 ºC


The stronger the bonds between molecules; the higher the melting/boiling points. This makes sense if you think about it, melting/boiling is splitting up the molecules - the stronger they are bonded the more energy you will need


Many substances have different melting and boiling points, thus one can use their melting and boiling points to identify them.



The boiling and melting points are very different.


Boiling and melting points are very different.



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