U1-3-2 - Molecule Polarity Flashcards
Part of the Structure and Bonding topic from Unit 1 of Higher Chemistry, Chemical Changes and Structure
1
Q
Polar molecule
A
A molecule which has a permanent dipole.
2
Q
Carbon dioxide contains polar bonds. Why is it a non-polar molecule?
A
Because bond dipoles cancel out, so it has no permanent dipole
3
Q
Explain the polarity of this molecule
A
Polar because it has a permanent dipole
4
Q
Both molecules have the same shape, but only ammonia is polar. Explain why.
A
N−Cl bonds are non-polar/pure covalent.
N−H bonds are polar.
No polar bonds = molecule is non-polar
