Why can liquid boil at low temperatures?

Answer 1

Nonpolar substances have lower melting and boiling points than polar substances because their particles are not attracted to each other like polar molecules are. They tend to be gases at room temperature (CO2, CH4, O2, etc). Not much heat is reguired to separate non-polar molecules from one another

Answer 2

The inter-atomic forces in polar molecules tend to draw molecules together (overcoming repulsive dispersion forces). When molecules become packed closer together, they tend to form solids and occasionally liquids.

Answer 3

Since water is polar it has slightly negatively charged oxygen and slightly positively charged hydrogen, this allows for water molecules to create weak hydrogen bonds (H2O---H2O) to break these bonds you need energy.

Non polar molecules does not form weak bonds like such in water so they do not require additional energy so they can boil at lower temperatures even if they have higher mass.

Answer 4

They tend to boil at lower temperatures because they lack certain intermolecular forces that hold polar molecules together. For example, they lack dipole-dipole interactions, and have no hydrogen bonding either. Essentially, the only force holding molecules together would be dispersion forces, which are rather weak.

Answer 5

It is possible if the pressure is also low.

Answer 6

Air is compose of non-polar molecules.

Answer 7

The intermolecular forces are weak.

Answer 8

Cool?