A chemist makes two synthetic dyes. Each dye molecule contains a carbon skeleton made from six carbon atoms.
Which difference between the carbon skeletons could make the dyes different compounds?
One carbon skeleton is a straight chain, while the other is a branched chain.
One skeleton is joined by intermolecular forces instead of carbon-carbon bonds.
The skeletons have the same arrangement but are drawn in opposite directions.
One skeleton has a carbon atom that forms five covalent bonds instead of four.
122 exam-style questions on OCR GCSE Chemistry 2.3 Properties of materials, covering 2.3.1 Carbon bonding and the variety of organic compounds, 2.3.2 Diamond, graphite, fullerenes and graphene, 2.3.3 Bond strength, changes of state and predicting states, 2.3.4 Bulk properties and types of bonding, and 2.3.5 Nanoparticles: scale, surface area, uses and risks. Each one has a worked solution and a mark scheme showing where the marks go.