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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Main Factors that Affect Clinical Consequence of Toxicity

... important factors that affect toxicosis. The chemical nature of a toxicant determines solubility, which in turn influences absorption, because nonpolar or lipid-soluble substances tend to be more readily absorbed than polar or ionized substances. The vehicle or carrier of the toxic compound ...

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by 2444256703
Thu Jan 29, 2015 7:30 am
Forum: Molecular Biology
Topic: Main Factors that Affect Clinical Consequence of Toxicity
Replies: 0
Views: 250

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: 20711


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: 4453

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: 5360

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: 7289
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