GROUP 7- Halogens 0.0 / 5 ? ChemistryGroup 7ASAQA Created by: francesca_321Created on: 07-05-15 19:59 What is the colour of flourine gas? Very pale yellow gas 1 of 19 What is the colour of chlorine gas? Greenish 2 of 19 What is the form of bromine? REd liquid 3 of 19 What gas is given off? dense brown 4 of 19 What is the form of Iodine? Black solid, gives off purple gas 5 of 19 What happens as you go down the group with MP and BP? It increases 6 of 19 Why does it increase? The molecules become larger as they have more electrons so larger van der waals forces 7 of 19 What happens with electronegativity? It decreases 8 of 19 Why? The atomic radii increases due to the increasing number of shell 9 of 19 What happens to the oxidising power? It increases 10 of 19 What are the colours in precipitate from Chlorine to Bromine and Iodine? White, Cream and Pale yellow 11 of 19 What is the reaction between NaF and H2SO4? NaF + H2SO4 --> NaHSO4 +HF 12 of 19 What is the observation? White steamy fumes of HF 13 of 19 What is the reaction between NaCL and H2SO4? NaCl +H2SO4 ---> NaHSO4 + HCL 14 of 19 What is the reduction product with Bromine? Sulphur dioxide 15 of 19 what can be observed? White steamy fumes of HBr 16 of 19 How can you tell if H2S is evolved? A gas with a bad egg smell 17 of 19 What insoluble precipitate can form? Sulphur 18 of 19 What else is evolved with the use of iodine? Black solid and purple fumes 19 of 19
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