What causes the boiling point of substances to differ?

Answer 1

A boiling point is the temperature at which a liquid becomes a gas in it's surrounding liquids. Just as different materials have different melting points they also have different vaporising points.

This is due to the bonding between the molecules. The stronger they are the hotter you must make the liquid to cause it to boil.

Answer 2

different liquids have different melting points depending on what element make up the molecules of the liquid and how large those molecules are but also how strong the van der vaal forces are between molecules. the bigger the molecules the stronger the forces and the more energy require to make it boil

Answer 3

Boiling points of liquids differ because of a few different causes. The most notable is the intermolecular forces between molecules in the liquid. Stronger intermolecular forces will yield a higher boiling point. If the intermolecular forces are relatively equal, then the molecule with the higher mass will have the higher boiling point.

The boiling point can also be raised if there is a salt dissolved in the solution.

Answer 4

because of the atmospheric pressure and the composition of the substance

Answer 5

Because different substances have different density and chemical make up.

Answer 6

Because after melting a substance must be heated further, to a higher temperature where the boiling is possible.

Answer 7

Yes they do.