Chapter 7 - Covalent Bonding and Properties

Question 1

Describe covalent bonding

Answer 1

• Usually formed between non-metals.
• Electrostatic attraction between a shared pair of electrons and the positive nuclei of the atoms.
• Formed by the sharing of valence electrons in non-metallic atoms.

Question 2

What kind of elements and compounds have simple molecular structure?

Answer 2

• Elements and compounds consisting of small molecules have simple molecular structures.
• Most non-metallic elements and covalent compounds have simple molecular structures.

Question 3

What are elements and compounds with simple molecular structure made up of?

Answer 3

• Substances with simple molecular structure are made up of independent/discrete small molecules.

Question 4

Compare the intermolecular forces of attraction in solids, liquids and gases with simple molecular structure

Answer 4

• Solid substance: weak intermolecular forces of attraction
• Liquid: attraction is even weaker in liquid
• Gas: almost non-existent

Question 5

Define allotropes.

Answer 5

Allotropes are elements of the same kind having different structures