1. Explain the structure of a water molecule and the charges around a water molecule. 2. What is the relationship between hydrogen bonding and the charge distribution around
a water molecule?
3. Explain why
(a) A lot of energy is needed to turn liquid water into water vapour
(b) Sugar and salt dissolve in water, but oil does not.
(c) Differentiate between cohesion and adhesion, and give a brief explanation of how
it can be demonstrated in the laboratory.
4. Discuss the chemical and physical properties of water and their benefit to living
organisms.​