Compare7 marksChallenge
Steel wire can be bent round a post without breaking, and it conducts electricity even while it is bent. Compare the explanations of these two properties in terms of metallic bonding.
CAIE A Level Chemistry 9701 · Chemical bonding
Chemical bonding: compare question
How this question is marked
7 marks, so the mark scheme is looking for about 7 separate creditworthy points. Making the same point twice in different words earns it once.
Compare means: Give similarities or differences between two things, and say which side each point belongs to. Write each point as a pair, for example: A is X, whereas B is Y. Two separate descriptions rarely earn the marks.
More Chemical bonding questions
- 7 marks · Describe the bonding in the aluminium chloride dimer, Al2Cl6. In your answer, you should: identify the types of covalent bonds present…
- 7 marks · Describe the shapes and bond angles of the following molecules and ions, explaining your answers using VSEPR theory. (a) BeCl2 (b) SO3 (c)…
- 6 marks · Aluminium foil is produced by repeatedly hammering and rolling aluminium into very thin sheets. Suggest, in terms of the metallic bonding…
- 7 marks · The Pauling electronegativities of sodium, magnesium and potassium are 0.9, 1.2 and 0.8, respectively. Compare the electronegativity of Na…
- 6 marks · Water has a much higher surface tension than propane, C3H8, at the same temperature. Ice floats on liquid water. Suggest explanations for…
- 4 marks · Aluminium is a typical metal. Explain, in terms of the particles involved, how metallic bonding holds a piece of aluminium metal together.
Written by Markquill to follow the Cambridge International syllabus. Markquill is independent and is not affiliated with or endorsed by Cambridge International.