AQA Jun 2016 Paper 5 Q1

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section a answer all questions in the spaces provided do not write outside the box a this question is about the elements in period from sodium to phosphorus na to p and their oxides element x forms an oxide that has a low melting point this oxide dissolves in water to form an acidic solution a i deduce the type of bonding in this oxide of x mark a ii identify element x mark a iii write an equation for the reaction between this oxide of x and water mark b element y reacts vigorously with water an oxide of y dissolves in water to form a solution with a ph of b i deduce the type of bonding in this oxide of y mark b ii identify element y mark b iii write an equation for the reaction of element y with water mark wmp jun chem b iv write an equation for the reaction of this oxide of y with hydrochloric acid do not write outside the box mark c element z forms an amphoteric oxide that has a very high melting point c i deduce the type of bonding in this oxide of z mark c ii write the formula of this amphoteric oxide mark c iii state the meaning of the term amphoteric mark c iv write two equations to show the amphoteric nature of the oxide of z marks turn over wmp jun chem

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