Covalent bonding

Question 1

Define the term covalent bonds

Answer 1

Bonds formed by the sharing of electrons between 2 non metal atoms

Question 2

Examples of SMS (simple molecular structures) and GMS (giant molecular structures)

Answer 2

GMS: Diamond, graphite, silicone dioxide (silicone, sand, glass)
SMS: everything else that isn’t GMS

Question 3

Physical properties of SMS

Answer 3

1. Low b.p/ m.p (thus, volatile/ liquid/ gas R.T.P)
2. Insoluble in water, soluble in organic solvents
3. Do not conduct electricity in any state (no free moving ions or electrons as they exist as molecules)

Question 4

Physical properties of GMS

Answer 4

1. High b.p/ m.p, most solid state
2. No conduct electricity (except graphite)
3. Insoluble in water and organic substances (not strong enough to oversome/ break strong covalent bonds)

Question 5

Intermolecular vs intramolecular

Answer 5

Inter: Between molecules
Intra: Inside the molecule itself