Chemistry A H032: Electrons, bonding and structure Topical Past Paper Questions
OCR AS Chemistry A (H032) past-paper questions on Electrons, bonding and structure, free. This topic is frequently examined across 5 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
This question is about water, $ H_{2}O $, and ammonia, $ NH_{3} $. (a) Hydrogen and oxygen have different electronegativities. What is meant by the term electronegativity? 2017-2018 (b) H_{2}O is a polar molecule that has hydrogen bonding. (i) Complete the diagram below to show h…
This question is about titanium (atomic number 22) and its compounds. a) Titanium exists as a mixture of five isotopes. A chemist analyses a sample of titanium using mass spectrometry. The results are shown in the table below. (i) Calculate the relative atomic mass of titanium in…
This question is about compounds of sulfur. (a) Potassium sulfide, $K_{2}S$, shows ionic bonding. (i) Explain what is meant by ionic bonding. (ii) Draw a 'dot-and-cross' diagram to show the bonding in $ K_{2}S $. Show outer electrons only. [2] [2] (b) Sulfur difluoride, $ SF_{2}…
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