unit 3

Question 1

Describe and explain the melting point of giant ionic substances (3)

Answer 1

• high melting point
  because strong electrostatic force of attraction between oppositely charged ions
• that require a lot of energy to overcome

Question 2

Describe and explain the melting point of simple covalent substances

Answer 2

• Small molecules
• Weak intermolecular forces
• That require a small amount of energy to overcome

Question 3

Describe and explain the melting point of giant metallic substances

Answer 3

• High melting point
• strong electrostatic force of attraction between positive metal ions and delocalized electrons