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Topic 4: Chemical bonding

27. Intermolecular forces / Hydrogen bonding: Recalling concept facts and definitions

1. Which type of forces exist between atoms of compounds and molecules?

1) Intermolecular forces
3) Catalytic forces


2) Intramolecular forces 4) Magnetic forces

2. The type of forces between molecules in molecular substances are called
1) Intermolecular forces 3) Catalytic forces
2) Intramolecular forces
4) Magnetic forces

3. Compare to intramolecular forces, the strength of intermolecular forces are generally
1) Stronger 2) Weaker 3)The same

4. Which list includes only intramolecular forces?
1) Ionic , covalent, and hydrogen bonds 3) Covalent, hydrogen, metallic bonds
2) Ionic, covalent, and metallic bonds
4) Metallic, hydrogen, and ionic bonds
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5. Which is an example of an intermolecular force? 3) Coordinate covalent bond
1) Polar covalent bond


1) Network solid bond 4) Hydrogen bond

6. The strength of intermolecular forces in molecular substance depends largely on the
1) Polarity of the molecules 3) Density of the molecules
2) Mass of the molecules
4) Potential energy of the molecules

7. The strength of intermolecular force in molecular substances will increase as
1) Density of the substances increases
3) Molecular polarity increases

2) Density of the substances decreases 4) Molecular polarity decreases

8. The strength of intermolecular forces among similar nonpolar substances will increase with
1) Decrease molecular size and increase distance between the molecules
2) Decrease molecular size and decrease distance between the molecules
3) Increase molecular size and increase distance between the molecules
4) Increase molecular size and decrease distance between the molecules

9. Which of the following physical properties of a molecular substance is due mostly to the strength of
its intermolecular forces?
1) Ionization energy 2) Boiling point 3) Density 4) Mass

10. Which set of properties are due to the strength of intermolecular forces between molecules?
1) Vapor pressure and boiling point 3) Molar mass and vapor pressure
2) Boiling point and Molar density

4) Vapor pressure and Molar density

11. Hydrogen bonding are formed between molecules when the molecules contain a hydrogen atom
that is covalently bonded to an atom that has
1) Small atomic radius and low electronegativity
2) Large atomic radius and low electronegativity
3) Small atomic radius and high electronegativity
4) Large atomic radius and low electronegativity

12. Oxygen, Nitrogen, and Fluorine bond with hydrogen to form molecules. These molecules are
attracted to each other by
1) Ionic bonds 3) Electrovalent bonds
4) Coordinate covalent bonds
2) Hydrogen bonds

13. Which kind of bonds are found in a sample of H2O (l) ? 3) Both covalent and Hydrogen bonds
1) Covalent bonds, only



2) Hydrogen bonds, only 4) Both ionic and hydrogen bonds

14. Hydrogen bonding are strongest between the molecules of
1) HCl (l) 2) HBr (l) 3) HI (l) 4) HF (l)

15. In which substance would the force of attraction between the molecules be considered hydrogen
bonding?
1) O2 (g) 2) NH3(l) 3) NaCl (s) 4) CO2 (g)

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