Use slow heating to carefully observe melting. Use quick heating to estimate the melting point. Use slow heating to confirm the careful measurement.
Boiling point of a substance is the temperature at which it converts from liquid to gas. Melting point is the temperature at which a substance converts from solid to liquid. Freezing point is just the opposite of melting point, it is the temperature at which a substance converts from liquid to solid.
A solid with a low melting point is most likely is held together by covalent bonds. Examples are hydrocarbons, ice, sugar and sulfur. The have low melting points because of the covalent bonds . It do not form crystals therefore can easily be broken. The attractions are weak.
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