Covalent Bonding

Question 1

What is covalent bonding

Answer 1

Electrostatic attraction between the shared pair of electrons and a positively charged nucleus of atoms

Question 2

Substances containing covalent bonds can be:

Answer 2

• simple molecules

- giant structures

Question 3

Describe simple molecules

Answer 3

• The atoms within a molecule held together by very strong covalent bonds
• weak intermolecular forces

Question 4

Properties of simple molecules

Answer 4

• low MP+BP because of weak intermolecular forces
• non-conductive
• soft and brittle

Question 5

Describe Giant covalent substances

Answer 5

• strong covalent bonds

- lots of these bonds

Question 6

What are the properties of giant covalent substances

Answer 6

• high MP+BP
• do not conduct electricity (expect graphite)
• insouble in water

Question 7

Whats a diamond used for

Answer 7

Cutting and drilling as it is very strong

Question 8

What is graphite used for

Answer 8

It is a good lubricant