Position predicts reaction type
Position predicts reaction type
A group is a vertical column of the Periodic Table; a period is a horizontal row whose elements have the same number of occupied electron shells. Elements in the same group have similar outer electron arrangements, so a known reaction can help predict another element's reactions.
Step-by-step lessons on OCR GCSE Chemistry 4.1 Predicting chemical reactions, covering 4.1.1 Properties and trends in Groups 1, 7 and 0, 4.1.2 Properties of the transition metals, 4.1.3 Reactivity predicted from position in the Periodic Table, and 4.1.4 Reactivity of metals and the reactivity series. Each one builds up to exam-style questions. Nail the core quantitative topics — moles, balancing equations and calculations — early on, since they underpin higher-tier questions across every paper and topic.