1. Substances with simple molecular structures are typically held together by:

a) Ionic bonds
b) Covalent bonds
c) Van der Waals bonds
d) Intermolecular bonds

2. Which of the following elements can form both simple molecular substances and substances with giant macromolecular structures?

a) Carbon
b) Nitrogen
c) Oxygen
d) Fluorine

3. The covalent bonds within molecules that hold them together are called bonds while the weak bonds between different molecules are called bonds.

4. What happens to the strength of the intermolecular bonds between molecules as the number of electrons present within the molecules increases?

a) They remain the same
b) They decrease
c) They increase
d) There is no relationship

5. Which of these molecules would have the weakest intermolecular bonds between them?

a) Fluorine (F₂)
b) Chlorine (Cl₂)
c) Bromine (Br₂)
d) Iodine (I₂)

6. When solid iodine sublimes the weak bonds between different iodine molecules are broken and not the much stronger covalent or bonds which hold the small iodine molecules together.

7. Which of the following statements about intermolecular bonding is true?

a) Intermolecular bonds are stronger than intramolecular bonds
b) Intermolecular bonds are stronger than ionic bonds
c) They affect the physical properties of covalent molecules
d) They affect the chemical properties of covalent molecules

8. The process of turning a solid directly into a gas is called .

9. Which group 4 element can form giant macromolecular solids such as graphite and diamond?

a) Titanium
b) Magnesium
c) Silicon
d) Carbon

10. Why are smallmolecular covalent substances electrical insulators?

a) They have weak intermolecular bonds
b) They have strong covalent bonds
c) They have no free or delocalised electrons
d) They have delocalised electrons