More Lessons for IGCSE Chemistry
A series of free IGCSE Chemistry Activities and Experiments (Cambridge IGCSE Chemistry).
Alkanes are hydrocarbons with single bonds between the carbon atoms.
The general formula is Cn
H(2n + 2)
Alkanes and their Isomers
Isomers are compounds with the same molecular formula but different structural formula.
Isomers of Pentane: C5
Isomers of Hexane
1. What is the key difference between the molecular and structural formula of a hydrocarbon?
2. Name and draw the isomers of C4
3. Name and draw the isomers of C5
Show Solutions for Questions 1 and 2
1. The molecular formula shows how many of each type of atom are present in a molecule. The structural formula shows the connectivity of the atoms in the molecule - the bonds and the order in which the atoms are connected.
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