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Saturated hydrocarbons are called Alkanes
· Small chain Alkanes are used as fuels
3. The reaction is called Combustion
4. The word equation for this chemical reaction is :
fuel (Hexane) + Oxygen→ Carbon Dioxide + Water + ENERGY (heat, light, sound)
5. If there is insufficient oxygen then the word equation is:
fuel (Hexane) + Insufficient 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 deadly to the human body (see objective 5.11)
7. Where can you find incomplete combustion?
Car Engines
Car Engines
8. What is used to reduce the harmful products from incomplete combustion?
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9. During incomplete combustion a smoky flame is often seen, explain this observation
Black precipitate is formed. Also known as suet (pure carbon) 10. Describe the two chemical tests for water
Anhydrous copper (II) sulphate turns from white to blue. Colbat solution(II) chloride turns from blue to pink.
11. Describe the chemical test for carbon dioxide gas
Limewater turns milky
Limewater turns milky
12. Describe a physical test for water
Boiling point is 100oC
