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Worksheets

Intermolecular Forces

Total questions: 17

Worksheet time: 4hrs 15mins

Name
Class
Date
1.

NH3 molecules can form...

a)

London dispersion forces

b)

Dipole-dipole forces

c)

Hydrogen bonds

2.

BH3 molecules can form...

a)

London dispersion forces

b)

Dipole-dipole forces

c)

Hydrogen bonds

3.

SO2 molecules can form...

a)

London dispersion forces

b)

Dipole-dipole forces

c)

Hydrogen bonds

4.

HF molecules can form...

a)

London dispersion forces

b)

Dipole-dipole forces

c)

Hydrogen bonds

5.

HCl molecules can form...

a)

London dispersion forces

b)

Dipole-dipole forces

c)

Hydrogen bonds

6.

BeCl2 molecules can form...

a)

London dispersion forces

b)

Dipole-dipole forces

c)

Hydrogen bonds

7.

CH4 molecules can form...

a)

London dispersion forces

b)

Dipole-dipole forces

c)

Hydrogen bonds

8.

CH3Cl molecules can form...

a)

London dispersion forces

b)

Dipole-dipole forces

c)

Hydrogen bonds

9.

CH2Cl2 molecules can form...

a)

London dispersion forces

b)

Dipole-dipole forces

c)

Hydrogen bonds

10.

Which one has the highest boiling point?

a)

CH4

b)

SO2

c)

H2O

11.

Which one has the highest boiling point?

a)

BeCl2

b)

CO2

c)

SF4

12.

Factor(s) that influence the strength of London dispersion forces

a)

Molecular size

b)

Molecular shape

c)

Molecular polarity

13.

Which of the following non-polar molecules has the highest boiling point? (Refer Page 15 - 17 of Intermolecular Forces)

a)

CH4; molar mass = 16.04 g/mol

b)

CCl4; molar mass = 153.82 g/mol

c)

PF5; molar mass = 125.966 g/mol

d)

Rn; molar mass = 222.01758 g/mol

14.

H2O and NH3 are polar molecules that can form the strongest type of intermolecular force (hydrogen bonding). However, the boiling point of H2O is 100.00 °C whereas NH3 is -33.34 °C.


Why is that so? (Refer Page 32 of Intermolecular Forces)

a)

H2O can form more hydrogen bonds than NH3

b)

H2O can form less hydrogen bonds than NH3

c)

O on the H2O is more electronegative than N on the NH3

15.

Between HF and H2O... which one has a higher boiling point? (Refer Page 32 of Intermolecular Forces)

a)

H2O

b)

HF

16.

Select the species that is/are soluble in water. Refer Page 33 - 38 of Intramolecular Forces.

a)

CH4

b)

BeCl2

c)

CO2

d)

NH3

e)

HF

17.

Why do the ice cubes float on liquid water? (Refer Page 39 - 43 of Intermolecular Forces)

a)

Due to the "open structure" of the arrangement of water molecules when cooled.

b)

Due to the "extensive structure" of the arrangement of water molecules when cooled.

c)

Due to the "open structure" of the arrangement of air when water is cooled.