· Saturated hydrocarbons are called ALKANES
· Small chain ALKANES are used as fuels
3. The reaction is called COMBUSTION REACTION
4. The word equation for this chemical reaction is :
fuel (E.G. PROPANE) + OXYGEN → WATER + CARBON DIOXIDE + ENERGY (heat, light, sound)
5. If there is insufficient oxygen then the word equation is:
fuel (PROPANE) + OXYGEN → CARBON DIOXIDE + CARBON MONOXIDE + WATER + ENERGY (heat, light, sound)
6. The problem with this reaction is that CARBON MONOXIDE is produced this gas is a POISONOUS/HARMFUL GAS to the human body (see objective 5.11)
7. Where can you find incomplete combustion?
8. What is used to reduce the harmful products from incomplete combustion?
9. During incomplete combustion a smoky flame is often seen, explain this observation
10. Describe the two chemical tests for water
11. Describe the chemical test for carbon dioxide gas
12. Describe a physical test for water
Extn: write a balanced equation (with state symbols) for the combustion of propane gas
