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.
Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.
You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.
We welcome your feedback, comments and questions about this site or page. Please submit your feedback or enquiries via our Feedback page.