O Level · Chemistry · Medium level · 7 questions
Atomic Structure & Bonding: Medium 1
Protons, electrons and the three kinds of bond, the section every later topic assumes, and the one where a dot-and-cross diagram is worth as much as an essay. This quiz is a step up: the questions ask you to use the ideas as well as recognise them. 7 questions (multiple choice), marked the moment you finish, with the reason for every answer.
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