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WalesChemistryQuick questions
Unit 2: Energy, Rate and Chemistry of Carbon Compounds
Quick questions on Organic compounds - WJEC A-Level Chemistry
7short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is types of structural isomerism?Show answer
Structural isomers share a molecular formula but differ in how the atoms are connected, and they come in three kinds. Chain isomers differ in the branching of the carbon skeleton (butane and 2-methylpropane). Position isomers have the same functional group in a different place (propan-1-ol and propan-2-ol). Functional-group isomers have the same formula but different functional groups (ethanol and methoxymethane, both ).
What is e/Z isomerism in vision?Show answer
The light-driven conversion of 11-cis-retinal to the all-trans form in the eye is the E/Z isomerism that triggers a nerve signal, showing how restricted rotation matters in biology. Naming in the chemical industry. Unambiguous IUPAC names let chemists worldwide order and synthesise the exact isomer needed, since different isomers can have very different properties and safety profiles.
What is q1?Show answer
Give the general formula of the alkenes. [1 mark]
What is q2?Show answer
Name the compound . [1 mark]
What is q3?Show answer
State why propene does not exhibit E/Z isomerism. [1 mark]
What is q4?Show answer
Name the type of structural isomerism shown by propan-1-ol and propan-2-ol. [1 mark]
What is q5?Show answer
State which two compounds are functional-group isomers of . [1 mark]
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