2. Explain how a compound is formed. (2 Marks)
3. What are organic compounds? (2 Marks)
4. Explain how polar covalent bonds are formed. (3 Marks)
5. Give two examples of the body structures where we can find the hydrogen bonds. (2 Marks)
6. Explain the hydrogen bonding. (2 marks)
7. Mention two types of covalent bonding. (2marks)
8. Define molar volume (1 mark)
9. You have a stock solution of 99% ethanol. Your procedure requires 50 mL solution of 70%
ethanol. Show your working.
i. How much initial volume of the stock solution would you need? (1 mark)
ii. How much volume of distilled water would you add to the initial volume? (1
mark)
iii. How would you prepare the 50ml of 70% ethanol solution needed by dilution? (2
marks)
10. Calculate the volume of carbon dioxide gas, CO2, occupied by 5 moles of the gas at Standard
Temperature and Pressure. Show your working. (2 marks)
11. Calculate the number of moles of ammonia gas, NH3, in a volume of 80 L of the gas measured at
Room Temperature and Pressure. Show your working. (3 marks).
12. With example, define optical isomerism? (2 Marks)
13. Define metamerism? (2 marks)
14. Differentiate chain isomerism from functional isomerism (4 marks)
15. In brief explain the IUPAC nomenclature for the naming of branching hydrocarbons structures. (5
Marks)
16. Name the compound below. (2 Marks)
17. Draw the alkene structure of the molecular formular 2,4-dimethylhept-3-ene. (3 Marks)
18. Explain why carbon is able to make large molecules
