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Answered 2012-11-13 12:21:56

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.

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what is the melting point and boiling point of substance


The boiling point is when a substance changes from liquid to gas and the melting point is when substance goes from a solid to a liquid


yes. each substance has a differant melting and boiling point.


A boiling point is a point on the temperature scale at which a substance begins to boil. A melting point is a point on the temperature scale at which a substance freezes. Melting and boiling points are unique to different types of elements.


The melting point is the same as the freezing point; however, the boiling point is not the same as the melting point.


Boiling point is the temperature at which a substance turns into a gas, while melting point is the temperature at which a substance turns into a liquid state from a solid state. The boiling point is always a higher temperature then the melting point. The melting point has a substance turn into a liquid from solid, and boiling point has a liquid turn into a gas.


Yes, impurities have important effects on the melting and boiling point of materials.


Example: compounds that are thermally decomposed before a supposed melting or boiling point.


The stronger the IMF, the higher the boiling point and the lower the melting point. The weaker the IMF, the lower the boiling point and the higher the melting point.


Each pure substance has its own unique melting and boiling point.


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


The melting point and the boiling point of a substance are physical characteristics for each substance and are unchanged at the same pressure.


This is possible because the melting and boiling point are specific properties.


Melting point: at this temperature a solid become a liquid.Boiling point: at this temperature a liquid become a gas.


The boiling point depends on altitude (pressure). The effect on the melting point is not significant.


Melting point: at this temperature a solid become liquid. Boiling point: at this temperature a liquid become gas.


The state of matter of a substance at room temperature depends on whether the melting and boiling points are above or below room temperature. At room temperature:A substance is solid if both the melting and boiling points are above room temperature.A substance is liquid if the melting point is below room temperature but the boiling point is above room temperature.A substance is a gas if both the melting point and boiling point are below room temperature.


Melting and boiling points are physical properties of materials.


At higher altitudes, there is less pressure. This will decrease the boiling point of water. The effect of pressure on the melting point is not very significant.At higher altitudes, there is less pressure. This will decrease the boiling point of water. The effect of pressure on the melting point is not very significant.At higher altitudes, there is less pressure. This will decrease the boiling point of water. The effect of pressure on the melting point is not very significant.At higher altitudes, there is less pressure. This will decrease the boiling point of water. The effect of pressure on the melting point is not very significant.



Check the melting or Boiling point. If the melting and boiling point is more or less than the original melting or boiling point the substance is impure.


The boiling point may increase or decrease if a substance contains impurities.


The melting point and boiling point of a pure substance are very specific numbers; knowing these allows you to narrow down the possible identity of the substance.


These values depends (specially the boiling point) on the pressure.




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