CAIE IGCSE Chemistry 11.1.8 Structural Isomers As Compounds with Questions

Work through real CAIE IGCSE Chemistry questions to define structural isomers, compare atom counts and draw alternative valid structures.

Exam points

define structural isomers as compounds with the same molecular formula but different structures
verify an isomer pair by matching every atom count before comparing structural formulae
draw a different valid carbon skeleton or functional arrangement without changing the formula

[Maximum number: 1]

Many organic compounds contain carbon and hydrogen only.

Carboxylic acids and esters contain carbon, hydrogen and oxygen only.

An ester X and a carboxylic acid Y both contain 3 carbon atoms.
X and Y have the same molecular formula.

State the name given to compounds with the same molecular formula but different structural formulae.

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CAIE IGCSE Chemistry 11.1.8 Structural Isomers As Compounds with Questions question 1