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The Halogens

The Halogens. http://schools- wikipedia.org/wp/h/Halogen.htm. Today’s Lesson. Introduction of Halogens Questions Lab Report Write Up Homework (Time dependant in class). The Halogens. Halogens are four reactive elements found in Group 7.

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The Halogens

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  1. The Halogens http://schools-wikipedia.org/wp/h/Halogen.htm

  2. Today’s Lesson • Introduction of Halogens • Questions • Lab Report Write Up • Homework (Time dependant in class)

  3. The Halogens • Halogens are four reactive elements found in Group 7. • They have 7 electrons in their outer shell so are very reactive. They are non-metals. • The smaller the Period number, the more reactive they are. • They work in the opposite direction of the Alkali Metals (Group 1) which are more reactive the larger the Period number.

  4. Halogens Continued • Halogens have 7 electrons in their outer shell. Atoms are stable when they have full electron shells, so halogens are reactive as they try and get that one last electron. • Halogens can also displace one another. For example, Bromine will displace Iodine, while Chlorine will displace Bromine. http://www.youtube.com/watch?v=F4IC_B9i4Sg

  5. Questions • Complete Q1-5 on P 98/99. • You will then complete the experiment write up to Risk Assessment. This needs to be finished by the end of the lesson, along with who is in your group and what equipment you need. • If you finish all that, then you can go on to your homework. Read P56/57 and answer Q1-4.

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