Bonding And Structure

Question 1

Explain these properties of water:
Higher melting temp than H2S even though it has fewer electrons in its molecules
Density of ice at zero degrees celcius is less than that of water at zero degrees celcius

Answer 1

2 marks for diagrams
Hydrogen sulfide has stronger London forces (more electrons)
Hydrogen bonding is stronger than London forces
Ice at zero molecules arranged in a lattice
Water at zero, molecules get closer