Thursday 06 May 2021

CODE: 8019


This webinar will concentrate on some of the more unusual questions associated with Group 7 chemistry.  Students often do well with recalling knowledge from this topic (such as the observations with silver nitrate) but struggle to apply this knowledge.  The session will focus on questions about mixtures of halides, using the observations to plan a separation and testing of haloalkanes. It will also help students with techniques and tips to help students to structure their answers in an exam.


  • Consolidate and improve knowledge of Group 7 Chemistry
  • Promote understanding of Group 7 Chemistry to allow application to unfamiliar situations
  • Review exemplar questions and answers, finding out how to improve exam skills
  • Work through tips and examples for approaches to organic chemistry questions
  • Set a grounding for similar questions found in Year 13 study (i.e transition metals, acyl chlorides, etc)


  • All students of A level Chemistry


4.00pm: Introduction, welcome and sound check

4.05 pm:  Mixtures of halides

  • Revision of the basic tests for halides – including why we use acid, which acid and why ammonia is used
  • A look at the expected observations with the silver nitrate test and halide mixtures
  • How to structure an answer to explain the observations with a mixture

4.20pm: Using observations to plan a separation

  • Tips to help with what a question is asking using halide separation as an example
  • What is the process – how can separation be achieved
  • Structuring the answer – how to explain the method for maximum marks
  • Pitfalls – Where do students lose marks in an exam

4.40pm: Haloalkane testing

  • A look at the chemistry – why is this situation different
  • Steps in the method – What is each stage about and how can you explain this?
  • Other situations when we can/cannot use just silver nitrate

4.55pm: Final tips


Paul Yardley

Paul has taught AQA A Level Chemistry for 9 years and leads a highly-successful Chemistry team, supporting students to achieve outstanding value added scores. Taking students from a range of backgrounds, over 60% achieve a high grade, with most of those students continuing to study a degree at a Russell group University, many in a chemistry-related field.  Paul is a member of the Association of Colleges’ College A Level Subject Excellence Network, identifying and sharing good practice with other practitioners that has contributed to their significantly positive value added scores.