Question

What do you know about the melting point of a substance?​

Answer 1

The time at which the given substance starts to melt is called it's melting point ___

Answer 2

MELTING POINT

• it is the temperature at which solid changes into liquid.
• at melting point substance have in equibirium with its solid and liquid state known as physical equilibrium.
• above melting point just greater temperature of 0.000001 changes it to liquid state but at melting point it is in equilibrium.
• the heat supplied after it reches melting point is latent heat of fusion. this heat does not rise the temperature of surrounding but changes solid to liquid.
• it is measured at standered temperature or standered conditions.
• devices used for measurment are such as automatic digital melting point meter.
• it depends on intermolecular forces
• the order of intermolecular forces is
• ionic >hydrogen bonding>vander walls >dipole dipole interactions> vander walls dispersion
• melting point of a pure substance is always higher then it's solution.
• other name used is liquification point.

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