Bonding
Caused by instantaneous/temporary dipoles
LDF
Of these, the one with the highest melting point: water, mineral oil, potassium chloride
KCl
What makes a molecule have a permanent dipole?
It contains polar bond(s) and dipoles do not cancel
Of the noble gases, the one with the weakest IMF
He He He, very funny
The 2 types of bonding present in calcium phosphate
Ca3(PO4)2
Ionic and covalent
Of the following, their rank in terms of increasing boiling point: Br2, F2, I2, Cl2
F2...I2
Bond angle in NH3
Around 107°
Of these, the most likely to be soluble in hexane: sodium chloride, ethanol, wax
Wax on, wax off!
The bonds in carbon dioxide and O2 are these
covalent double bonds
What determines whether two substances will mix and dissolve well?
Like dissolves like, substances with the same intermolecular forces will dissolve in each other
Shape of this ion: SCN-
linear
Of these, the one most likely to be a gas at room temperature: CH4, CH3Br, CH3OH
methane
What is a polar bond?
Covalent bond where atoms have high difference in electronegativity (0.3-1.7)
What is a hydrogen bond?
A dipole-dipole interaction between a polar H and N, O or F.
The geometry of F2CS
Trigonal planar
These compounds are brittle because hitting them causes like charges to line up and produce enormous repulsive force
ionic