7.2. Oxides
A subsection of Chemistry, 5070, through 7. Acids, bases and salts
Listing 10 of 25 questions
Choose from the following oxides to answer the questions. calcium oxide carbon monoxide copper(oxide nitrogen dioxide nitrogen monoxide silicon dioxide sulfur dioxide water zinc oxide Each oxide may be used once, more than once or not at all. Which oxide: is used as a food preservative is amphoteric has a molecule that contains only 15 protons has a high melting point because it has a giant covalent structure reacts with dilute sulfuric acid to make a blue solution?
5070_s20_qp_21
THEORY
2020
Paper 2, Variant 1
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Choose from the following oxides to answer the questions. Al2O3 CO CO2 CaO Fe2O3 H2O Na2O SO2 SiO2 Each oxide may be used once, more than once or not at all. State which oxide: is a solid made during the thermal decomposition of limestone in the blast furnace reacts with both acids and alkalis has a giant covalent structure has an ion with an oxidation number of +2 turns white anhydrous copper(sulfate blue is made during the fermentation of aqueous glucose to make ethanol.
5070_s23_qp_21
THEORY
2023
Paper 2, Variant 1
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Questions Discovered
25