1) What is the reactivity series? a) A list of elements ordered by their atomic number b) A list of elements ordered by their reactivity c) A list of elements ordered by their melting points d) A list of elements ordered alphabetically 2) How can metals be placed in order of their reactivity? a) Add the metals to water or acid and see which ones react the most (by how much fizzing there is) (Correct) b) Arrange them based on their atomic masses c) Sort them according to their boiling points d) Measure their densities and rank them accordingly 3) What is the name for a reaction where oxygen is removed from a compound? a) Oxidation b) Reduction c) Combustion d) Decomposition 4) Explain why zinc can be extracted from zinc oxide with carbon but magnesium cannot be extracted from magnesium oxide with carbon a) Magnesium is less reactive than carbon (1), Zinc is more reactive than carbon (1), Carbon can, therefore, remove oxygen from zinc oxide but not magnesium oxide (1) b) Magnesium is more reactive than carbon (1), Zinc is less reactive than carbon (1), Carbon can, therefore, remove oxygen from magnesium oxide but not zinc oxide (1) c) Magnesium is more reactive than carbon (1), Zinc is more reactive than carbon (1), Carbon cannot remove oxygen from either magnesium oxide or zinc oxide (1) d) Magnesium is less reactive than carbon (1), Zinc is less reactive than carbon (1), Carbon cannot remove oxygen from either magnesium oxide or zinc oxide (1) 5) Explain why gold and silver can be found naturally in the Earth's crust a) They are very reactive b) They form strong bonds with other elements c) They are highly abundant d) They are very unreactive 6) What process is used to extract metals more reactive than carbon a) Heating b) Electrolysis c) Filtration d) Distillation 7) Define an ore a) A metal compound with low economic value b) A material containing only traces of metal c) A material containing enough metal in it for it to be economically worthwhile to extract the metal d) A substance composed entirely of metal atoms 8) Define a displacement reaction a) A reaction between two non-metals b) A reaction that produces a gas c) A reaction in which a more reactive element takes the place of a less reactive element in one of its compounds or in solution d) A reaction that changes the state of matter 9) Define oxidation in the context of loss and gain of electrons a) Oxidation is the gain of electrons b) Oxidation is the loss of electrons c) Oxidation is the transfer of protons d) Oxidation is the formation of a new compound 10) Define reduction in the context of loss and gain of electrons a) Reduction is the gain of electrons b) Reduction is the loss of electrons c) Reduction is the transfer of protons d) Reduction is the formation of a new compound 11) Which of the substances below has been oxidized and which has been reduced? Al³⁺ + Fe → Fe³⁺ + Al a) Aluminium has been oxidized, and iron has been reduced b) Aluminium has been reduced, and iron has been oxidized c) Both aluminium and iron have been oxidized d) Both aluminium and iron have been reduced 12) Show two half equations for the reaction below: Al³⁺ + Fe → Fe³⁺ + Al a) Al³⁺ + 3e⁻ → Al, Fe → Fe³⁺ + 3e- b) Al + 3e⁻ → Al³⁺, Fe³⁺ → Fe + 3e⁻ c) Al → Al³⁺ + 3e⁻, Fe³⁺ + 3e⁻ → Fe d) Al³⁺ → Al + 3e⁻, Fe + 3e⁻ → Fe³⁺

FULL Reactivity of Metals

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