Attraction between Compounds Flashcards
Bond Polarity is
difference in electronegativity
If you have nonpolar bonds. then the molecule is…
nonpolar
If you have polar bonds with even distribution of charges, then the molecule is…
Nonpolar
If you have polar bonds with uneven distribution of charges, then the molecule is…
polar
Polar molecules have
polar ends
Intermolecular forces (IMF):
attraction between molecules
Intramolecular forces:
within a compound
(ionic bonds, covalent bonds, metallic bonding)
What is Van der Waals Force’s used for
general term used to define the attraction of intermolecular forces between molecules
What are the 2 types of Van de Waals forces?
weak London Dispersion Forces
Stronger dipole-dipole forces
What causes LDF?
attraction between induced dipole-caused by motion of electrons
How strong is LDF?
weakest of all
Where is LDF found?
Found in all molecules, but the only attraction present in nonpolar molecules
What happens to LDF attraction as the number of electrons increase?
The attraction increases
Dipole Interactions have permanent dipoles
true
How do dipole interactions occur?
When the polar molecules are attracted to eachother because of their partially charged ends?
Are dipole interactions weaker or stronger than LDF?
slightly stronger
How is dipole interaction attraction compared to ionic solids?
opposites are attracted, but not as completely hooked as ionic solids
What atoms are covalently bonded to hydrogen
N, O, and F because they are highly electronegative
Does Hydron pair with any other molecule?
The lone pair in the molecule next to it
How strong are hydrogen bonds?
They are the strongest of the intermolecular forces
What are the intermolecular forces from weakest to strongest?
dispersion, dipole interactions, hydrogen bonding
How do the IMF forces relate to intramolecular forces?
All IMF are weaker than intramolecular forces
What is dipole-ion interaction?
polar molecule interacting with an ion
What are all the forces (inter & intra) from weakest to strongest?
LDF, dipole-dipole, H-bonds, ion-dipole, ion-ion/ionic & metallic & covalent network solids
