[qstong0601]

what is the difference between non polar covalent bond and pure covalent bond?

[Naumans]

Hmm,   
non polar convalent bond-  A bond in which electrons are shared between elements having a difference in electronegativity of less than 0.5


"pure" covalent bond - where the electrons are shared evenly between the two atoms.

Now you decide what the difference could be

kinda hard to discern

good luck >>