2.4 molecular polarity Flashcards
2 polar molecules attract to each other
dipole-dipole interaction
nonpolar molecules attract to each other
London dispersion
strength of attracts (weakest)
nonpolaer to nonpolar
london dispesion forces
between any 2 molecules
dipole to dipole interaction
between any 2
hydrogen bonds
between 2 very polar that contain N-H, O-H, F-H
ionic bonds
between ions via transfer
covalent bonds
between atoms in the same molecule; polar than nonpolar
molecular polar
diametrically opposite must contain a polar covalent bond dipoles are asymmetrical meaning points in the same direction
polar
asymmetrical polar
hydrophilic
water-loving
cause of attraction between molecules of water
Their opposite charges
hydrophobic
water hating
what type of bond holds the hydrogen atoms to the oxygen atom within the water molecule
polar covalent
why didn’t the chemicals mix together well?
because the nonpolar chemicals do not mix with the polar chemicals
does the positive or negative atom have higher electronegativity?
negative
if there is a small difference in electronegativity what is most likely its bond
polar covalent
What there is a large difference in electronegativity
it’s ionic
how could the polar bonds’s dipoles cancel each other out
if they are symmetrical it makes them nonpolar
which atom has the most electronegativity
b
which atom has the negative charge
b
which atoms have the positive charges
a and c
what changed in this model from the first
the bond dipoles flipped and the molecular dipole followed it, a and c are now negative, b is positive
