2.6. Giant covalent structures
A subsection of Chemistry, 0620, through 2. Atoms, elements and compounds
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Silicon(oxide, SiO2, and zirconium(oxide, ZrO2, are both macromolecules. They have similar physical properties but silicon(oxide is acidic and zirconium(oxide is amphoteric. Defi ne the term macromolecule. Predict three physical properties of these two oxides. Name an element which has the same physical properties as these two oxides. Name a reagent that reacts with the oxides of both elements. Name a reagent that reacts with only one of the oxides. reagent oxide which reacts
0620_w12_qp_31
THEORY
2012
Paper 3, Variant 1
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