Some examples from this set of practice questions
1.
List 2 characteristics of Organic compounds
Answer: 1.) Large and complex molecules 2.) Combustible in Oxygen
2.
Describe the difference between Hydrophilic and Hydrophobic substances
Answer: Hydrophilic substances react readily with water and Hydrophobic substances do not dissolve in water
3.
What is Cohesion?
Answer: Cohesion is the force between water molecules
4.
List the 3 different phases of water
Answer: Water vapour , Liquid, Solid
5.
True or False
Answer: As water is cooled it loses energy and the H-bonds become weaker
6.
Give 3 reasons why water is important for living organisms
Answer: 1.) Regulation of body temperature 2.) Solvent for biochemical reactions 3.) Transporting agent
7.
What is a buffer?
Answer: A Buffer is a substance that counteracts pH changes
8.
Why are Electrolytes important?
Answer: Electrolytes are important for nerve and muscle functioning
9.
What are Organic compounds ?
Answer: Organic compounds contain carbon, are usually large and are combustible in oxygen
10.
What are Inorganic compounds ?
Answer: Inorganic compounds do not contain carbon (except Co2, CO & CN), are simple and cannot burn oxygen
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