O Level · Chemistry · Easy level · 7 questions
The Periodic Table: Easy 1
Groups, periods and the trends down Group I and Group VII, explained from electron shells, the section where "describe" and "explain" are two different marks. This quiz is the easy start: the questions check the basic ideas, the right one to take straight after reading the lesson. 7 questions (multiple choice), marked the moment you finish, with the reason for every answer.
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