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Why do halogens get less reactive down the group? What is the trend in electronegativity, colour and melting point of halogens down the group? All this and more covered in this comprehensive lesson with questions and answers! This is a Year 12 A level lesson for Edexcel International Unit 2 – WCH12, but it can also be used for all UK exam boards. All the slides in this lesson are fully animated and include answers to every mini plenary question and exam question. The breakdown of the slides (which are best opened on Microsoft PowerPoint) is as follows:

Slide 1 - Title and 5-minute starter. The starter is a grid of four questions entitled ‘last week, last lesson, today’s learning and future learning’. Use this generic slide for all of your lessons by simply changing the questions and the answers each time.
Slide 2 - Lesson objectives (see thumbnail image)
Slides 3 – 5: A table with the melting points, boiling points, state at room temperature and colour of the halogens. State at room temperature and colour are blank, so that the students can fill it in. Print slides 4 – 5 for the students
Slide 6 – colours of the halogens in water
Slide 7 – Why do the melting and boiling points of halogens increase as you go down the group? Answer animates on to the screen in bullet points as you click, so you can take some answers from the class first
Slides 8 – 11: Word fill exercise on the electronegativity of the halogens. There is a word bank included. Print slides 9 – 10 for the students
Slide 12 – an alternative answer to the word fill exercise
Slides 13 -14 : Are halogens likely to be oxidising or reducing agents? Answer discussed, including the trend for oxidising ability down the group, on the next slide
Slides 15 – 21: Exam questions with mark scheme answers (included with the purchase of this resource)

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