Dictionary » N » Nonpolar




(physics) Not containing a dipole; lacking a permanently dipolar molecule.

(chemistry) Pertaining to a compound that is nonionic or does not dissociate into ions.


Examples of nonpolar compounds are fats and oil. Many nonpolar compounds are hydrophobic. They do not readily dissolve in water but they do in a nonpolar solvent.

Word origin: L nōn-, not + polar.

Related forms: nonpolarity (noun).
Related terms:

Compare: polar.

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Re: Are carbohydrates hydrophobic?

... negative and the hydrogen or carbon partially positive). Carbon and hydrogen have similar electron affinities thus carbon-hydrogen bonds are nonpolar (as are carbon-carbon bonds)." (“Ionic, Polar and Non-polar Molecules”) A curious thing about carbohydrates is that starches, polymers ...

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by HectorEnriquezC
Fri Aug 30, 2013 1:36 am
Forum: Molecular Biology
Topic: Are carbohydrates hydrophobic?
Replies: 7
Views: 15543


hydrophilic - with ionic groups or polar bonds (those with unbalanced electrons) hydrophobic - those with nonpolar groups (or symmetric polar bonds as in CO2)

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by JackBean
Mon Jun 24, 2013 1:33 pm
Forum: Molecular Biology
Topic: Hydrophilic/hydrophobic
Replies: 2
Views: 3344

Edman Degradation Problem

... part out without knowing the protein code, but I know that if it is a transmembrane protein it should have a large region containing hydrophobic/nonpolar amino acids so that it can anchor itself into the membrane E) So neither my professor or my book goes over which amino acids can be phosphorylated...but ...

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by pinkerpikachu
Sun Oct 16, 2011 7:35 pm
Forum: Molecular Biology
Topic: Edman Degradation Problem
Replies: 1
Views: 4195

Test Question I think I got Right but was Marked WRONG!!! ??

... diffusion through the membrane. But even if the sodium was wrong, your answer would be wrong also, since H2O is polar and will diffuse harder than nonpolar CO2 ;)

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by JackBean
Thu Jun 23, 2011 8:32 am
Forum: Cell Biology
Topic: Test Question I think I got Right but was Marked WRONG!!! ??
Replies: 4
Views: 6295

bile salts properties

... performed, it was determined that out of 5 different solvents. Three of the solvents were proven to be polar to oil, and two of the solvents nonpolar. Despite the fact that there were nonpolar solvents, it was proven that one could suspend or “mix” lipids that are nonpolar in an aqueous solution ...

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by BFriend7605
Fri Feb 25, 2011 6:10 am
Forum: Human Biology
Topic: bile salts properties
Replies: 8
Views: 9267
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