Topic 3 - 3.3 - Covalent Bonding

Question 1

What is the name for two non-metals sharing electrons?

Answer 1

Covalent Bonding

Question 2

What is a covalent bond?

Answer 2

• Shared pair of electrons between two non-metal atoms. - The electrostatic force of attraction between the positively charged nuclei of each atom and the negatively charged electrons holds the atoms together.

Question 3

• What are diatomic molecules/elements?
• Name all 7 of the diatomic elements

Answer 3

• Pure elements that form molecules made of two atoms bonded together
  1. Iodine
  2. Bromine
  3. Chlorine
  4. Fluorine
  5. Oxygen
  6. Nitrogen
  7. Hydrogen

Question 4

Explain why covalent molecules have low melting and boiling points

Answer 4

The weak intermolecular forces (forces between molecules) only require a small amount of energy to break, meaning they’ll break at low temperatures.