Chemistry Tutorial
ORGANIC CHEMISTRY SHORT NOTES PART 1 ALKANES IGFCSE (GRADE 9,10,11)
Intro
this is a revision for organic chemistry
ALKANES
general formula:CnH2N+2
they are saturated compounds,and the molecule of their compounds contain single bonds between the carbon atoms in their chains.
for example: As the length of hydrocarbon chain increases the length of the vander waal forces also increases changing their physical states( from gas to liquid)
REACTIONS OF ALKANES
Combustion reactions
One of the major properties of alkanes is that they burn exothermically
so here are the reactions
this is how u do the reactions.
Sample Problem
TRY SOME OF THESE QUESTIONS
1. write the first six alkanes.
2. draw the structural formula of butane and propane.
3. wrtie the complete combustion reaction of propane.
Solution
answers
1.
methane
ethane
propane
butane
pentane
hexane
2.
CH3-CH2-CH2-CH3 = BUTANE
CH3-CH2-CH3 = PROPANE
3.
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