AQA Jun 2015 Paper 1 Q3

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do not write outside the box silicon dioxide sio has a crystal structure similar to diamond a give the name of the type of crystal structure shown by silicon dioxide mark b suggest why silicon dioxide does not conduct electricity when molten mark c silicon dioxide reacts with hydrofluoric acid hf to produce hexafluorosilicic acid h sif and one other substance write an equation for this reaction mark wmp jun chem

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