QUESTION 5 5.1 Most metals have a high melting poi…

Questions

QUESTION 5 5.1 Mоst metаls hаve а high melting pоint. State оne other physical property that all metals have. [1] 5.2 Iron often rusts. Name the two substances, other than iron, that must be present for iron to rust. [1] Iron can be obtained by heating iron (III) oxide with zinc powder. Fe2O3 + 3Zn ---> 2Fe + 3ZnO 5.3 What can be deduced about the reactivity of zinc from this reaction? [1] 5.4 The ionic equation for this reaction is shown. 2Fe3++ 3Zn -- >2Fe + 3Zn2+ Identify the oxidising agent in this reaction. Explain your answer in terms of electron transfer. oxidising agent .... explanation ... [2] 5.5 Zinc oxide is amphoteric. Describe two simple experiments to show that zinc oxide is amphoteric. Name the reagents you would use and describe the observations you would make. reagent 1 ... observation ... reagent 2 ... observation .... [3] [8]

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