1) Which halogen is the least reactive? a) Chlorine b) Fluorine c) Bromine d) Iodine 2) When a more reactive halogen replaces a less reactive one in a compound, a ______________ reaction has occured a) disorderment b) decomposition c) displacement d) neutralisation 3) Chlorine will displace Bromine from a compound a) True b) False 4) Potassium Iodide + Bromine --> a) Potassium iodide + bromine b) Potassium bromide + iodine c) Potassium bromide d) Potassium iodide 5) KBr + F2 --> a) No reaction b) KF + Br2 c) KF + Br 6) KBr + F2 --> a) Fluorine is reduced b) Fluorine is oxidised 7) KBr + F2 --> a) Fluorine is a reducing agent b) Fluorine is an oxidising agent 8) KI + Cl2 --> a) Potassium's oxidation number changes b) Potassium's oxidation number does not change 9) KI + Cl2 --> a) Chlorine's oxidation number changes from 0 to -1 b) Chlorine's oxidation number changes from -1 to 0 10) Does a reaction take place between Potassium Iodide + Chlorine a) Yes b) No 11) What colour is Bromine in its natural state? a) Green b) Purple c) Red-Brown d) Yellow 12) What state is chlorine in at room temperature? a) Liquid b) Solid c) Gas

Halogens Displacement

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