Bonding And Structure

Question 1

Boil and melt point of giant covalent and why

Answer 1

High

Strong Covalent bonds

Question 2

Melt and boil points of ionic lattices

Answer 2

High

Strong electrostatic attraction between oppositely charged ions

Question 3

Solubility of iodine and cyclohexane

Answer 3

• soluble

Iodine is non polar
Cyclohexane is non polar

Like polarity are soluble

Question 4

Solubility of water and iodine

Answer 4

Insoluble

Water is polar
Iodine is non polar

Unlike therefore not soluble

Question 5

Sulfur dioxide and water solubility

Answer 5

Soluble

SO2 polar
H2O polar

Question 6

SO2 and cyclohexane solubility

Answer 6

Insoluble

SO2 polar
Cyclohexane non polar

Question 7

Average bond enthalpy

Answer 7

Energy needed to break a mole of bonds

Higher the energy, stronger the bond

Question 8

Correlation with bonds and average bond enthalpy?

Answer 8

More bonds, higher ABE

Question 9

Melting and boiling point of simple covalent and why

Answer 9

Low

Weak intermolecular forces

Question 10

How are London forces formed. (4)

Answer 10

Weak intermolecular interactions that exists between all molecules.

Movement of electrons cause an uneven distribution.

This forms an instantaneous dipole in one atom.

This dipole induces another dipole in a neighbouring molecule.