1What are organic and inorganic compounds? Give two examples of each.
2What are hydrocarbons? Why is methanol not a hydrocarbon even though it is organic?
3Carbon dioxide contains carbon. Why is it not counted as an organic compound?
4Why are kerosene, firewood, spirit and charcoal used as fuels?
5Name four organic compounds found in the human body.
6Which elements are generally present in organic compounds? Can an organic compound contain a metal?
7What is the main source of hydrocarbons? On what basis are hydrocarbons classified?
8Using bonds, explain why a model of propane, \( \text{C}_3\text{H}_8 \), has eight hydrogen atoms.
9Sort sugar, stone, ghee, glass, iron and maize into combustible and non-combustible. Which are organic and which inorganic?
10What is organic chemistry?