A student uses a ball and stick model to represent part of the structure of diamond. In the model, a central carbon atom is joined by sticks to four other carbon atoms. The sticks represent covalent bonds.
Statement 1: It shows only a small part of the structure, so it does not show that diamond is a giant structure containing a very large number of atoms.
Statement 2: The sticks suggest that the atoms are far apart, but in diamond the atoms are much closer together.
Statement 3: It does not show that a carbon atom forms four covalent bonds.
Which statements are limitations of the model?
1 and 2 only
1 and 3 only
2 and 3 only
1, 2 and 3
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.