Chemistry Halogens
- Created by: MelissaForfitt
- Created on: 21-05-14 13:26
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- Chemistry
- Group 7 Elements
- Halogens
- Fluorine, chlorine, bromine and iodine.
- At room temperature: Chlorine is a green gas, Bromine is an orange liquid, Iodine is a grey solid.
- Group 7 elements all have 7 electrons in their outer shell.
- Group 7 elements have similar properties.
- Group 7 elements all have 7 electrons in their outer shell.
- Chlorine can sterilise water.
- Chlorine can make pesticides and plastics.
- Halogens react with alkali metals to give metal halides.
- 2Na + Cl2 = 2NaCl
- Sodium + Chlorine = Sodium Chloride
- Properties of fluorine and astatine can be predicted as there are trends down group 7.
- Reactivity decreases down the group.
- DISPLACEMENT: Halogen reacts with solution of metal halides.
- Chlorine displaces bromides and iodides.
- Bromine displaces iodides.
- Cl2 + 2NaBr = 2NaCl + Br2
- Chlorine + Sodium Bromide = Sodium Chloride + Bromine
- Properties of fluorine and astatine can be predicted as there are trends down group 7.
- Sodium + Chlorine = Sodium Chloride
- 2Na + Cl2 = 2NaCl
- Transition Elements
- Group 7 Elements
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