Polarisation Flashcards
1
Q
what is a dipole?
A
the difference in charge between two atoms caused by a shift in electron density in the bond
2
Q
what happens when charge is distributed unevenly over a molecule?
A
the molecule has a permanent dipole
3
Q
what does a permanent dipole create?
A
a polar molecule
4
Q
what type of molecule is created when the polar bonds are symmetrical?
A
a non-polar molecule as the dipoles cancel each other out therefore the molecule has no permanent dipole
e.g. CO2
5
Q
what type of molecule is created when the polar bonds are pointing in the same direction?
A
a polar molecule as the dipoles don’t cancel each other out
e.g. H2O
