Show:
Bonding
IMF’s
Shapes
Allotropes
Physical properties
100
Also called an intramolecular force
Chemical bond
100

Caused by instantaneous/temporary dipoles

LDF

100
Bond angle in trigonal planar
120°
100
What are the allotropes of carbon?
Graphite, diamond and fullerenes (C60)
100

Of these, the one with the highest melting point: water, mineral oil, potassium chloride

KCl

200
Valence electrons
Electrons in outer main energy level/shell
200

What makes a molecule have a permanent dipole?

It contains polar bond(s) and dipoles do not cancel

200
Shape of CH4
Tetrahedral
200
Bonding and electron arrangement in diamond
Giant covalent, tetrahedral
200

Of the noble gases, the one with the weakest IMF

He He He, very funny

300

The 2 types of bonding present in calcium phosphate

Ca3(PO4)2

Ionic and covalent

300

Of the following, their rank in terms of increasing boiling point: Br2, F2, I2, Cl2

F2...I2

300

Bond angle in NH3

Around 107°

300
Hybridization of C in the 3 allotropes of carbon
sp2 in graphite and C60, sp3 in diamond
300

Of these, the most likely to be soluble in hexane: sodium chloride, ethanol, wax

Wax on, wax off!

400

The bonds in carbon dioxide and O2 are these

covalent double bonds

400

What determines whether two substances will mix and dissolve well?

Like dissolves like, substances with the same intermolecular forces will dissolve in each other

400

Shape of this ion: SCN-

linear

400
Structure of Si and SiO2
Similar to diamond: tetrahedral giant covalent
400

Of these, the one most likely to be a gas at room temperature: CH4, CH3Br, CH3OH

methane

500

What is a polar bond?

Covalent bond where atoms have high difference in electronegativity (0.3-1.7)

500

What is a hydrogen bond?

A dipole-dipole interaction between a polar H and N, O or F.

500

The geometry of F2CS

Trigonal planar

500
Conductivity of allotropes of carbon
None in diamond. Weak in C60 and graphite due to delocalized electrons. Graphite's is stronger than C60.
500

These compounds are brittle because hitting them causes like charges to line up and produce enormous repulsive force

ionic