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: alkanes formula As the length of hydrocarbon chain increases the length of the vander waal forces also increases changing their physical states( from gas to liquid) properties

REACTIONS OF ALKANES
Combustion reactions
One of the major properties of alkanes is that they burn exothermically
so here are the reactions
reaction example
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.
reaction

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