This complete year 12 lesson covers group 17, the halogens, and halide ions. It includes the redox reactions of the elements and their ions (including disproportionation) and the precipitation reactions of the halide ions. The resource features a 69 slide animated PowerPoint that illustrates and explains the concepts in a lively and visual way and includes images of the observations in the key reactions. . A starter (true-false quiz) and a plenary quiz are also included. An 11 page worksheet and answers to all exercises are provided.
This resource is part of a series covering the OCR AS Chemistry specification and relates to the following sections:
Module 3 – Periodic table and energy
Part 1 – The periodic table
3.1.3 – The halogens
Content covered:
• Structure and physical properties of group 17 elements
• Electron configuration and formation of ions
• Redox reactions of halogens
• Reactivity of halogens
• Displacement reactions
• Disproportionation reactions of the halogens, including production of bleach
• Benefits and hazards of treating drinking water with chlorine
• Precipitation reactions of aqueous halide ions with aqueous silver nitrate
• Use of silver nitrate as a test for aqueous halide ions
Duration: 1-2 lessons
Please review!
Links
Previous topic: Topic 23 – Group 2
https://www.tes.com/teaching-resource/group-2-ocr-as-chemistry-13074756
Next topic: Topic 24A – Qualitative analysis (free resource)
https://www.tes.com/teaching-resource/qualitative-analysis-ocr-as-chemistry-13128777
Related topic: Topic 13 - Redox
https://www.tes.com/teaching-resource/redox-ocr-as-chemistry-12409890
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