"Predict the polarity of the covalent bonds..."?

Predict the polarity of the covalent bonds in the following molecules, using the notation o+ and o- where appropriate. 2 questions.. a) HF b) N2 Ok, I have never done this before (first year of 6th form (chemistry)) and I don't have a clue what polarity is. Can someone please explain what it... show more Predict the polarity of the covalent bonds in the following molecules, using the notation o+ and o- where appropriate.

2 questions..

a) HF
b) N2

Ok, I have never done this before (first year of 6th form (chemistry)) and I don't have a clue what polarity is. Can someone please explain what it means/does and perhaps answer my first 2 questions as examples? :D

Looking for a quick answer as this homework is in for tomorrow!
3 answers 3