A space-filling model represents part of a poly(ethene) molecule. It shows many atoms touching, but no lines between them. A student says, "Poly(ethene) contains no covalent bonds because none are visible in this model."
Explain why the student is wrong and state one feature that would be easier to see in a ball and stick model.
122 exam-style questions on OCR GCSE Chemistry 2.2 Bonding, covering 2.2.1 Metals, non-metals and the Periodic Table, 2.2.2 Types of chemical bonding and dot and cross diagrams, 2.2.3 Limitations of bonding models, and 2.2.4 Reactivity, atomic number and the modern Periodic Table. Each one has a worked solution and a mark scheme showing where the marks go.