Self Assessment Checklist – Metals

Knowing the learning objectives is the first step in acing Chemistry. Master the essential concepts and apply them to interesting Chemistry questions confidently. Topical syllabus objective checklists are available here for your self-assessment. These checklists are based on Cambridge O-level Syllabus. Conduct self assessment when you revise. Tick against objectives that you can confidently say ‘I Can Do It’. Revise objectives that you are unsure of. Knowing what you need to know builds confidence in tackling questions. 

Work hard. Work smart. All the best. 

Ms Tara

ICanDoChemistry

Self Assessment Checklist - Properties of metals

  I can do this!
aDescribe the general physical properties of metals as solids having high melting and boiling points, malleable, good conductors of heat and electricity in terms of their structure.
bDescribe alloys as a mixture of a metal with another element, e.g. brass; stainless steel.
cIdentify representations of metals and alloys from diagrams of structures.
dExplain why alloys have different physical properties to their constituent elements.

Self Assessment Checklist - Reactivity series

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aDetermine the order of reactivity of metals - calcium, copper, (hydrogen), iron, lead, magnesium, potassium, silver, sodium and zinc by reference to
a(i)the reactions, if any, of the metals with water, steam and dilute hydrochloric acid,
a(ii)the reduction, if any, of their oxides by carbon and/or by hydrogen.
bDescribe the reactivity series as related to the tendency of a metal to form its positive ion, illustrated by its reaction with
b(i)the aqueous ions of the other listed metals (displacement reactions of metals),
b(ii)the oxides of the other listed metals.
cDeduce the order of metal reactivity from a given set of experimental results.
dDescribe the action of heat on the carbonates of the listed metals and explain how their thermal stability is related to the reactivity series.

Self Assessment Checklist - Extraction of metals

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aDescribe the ease of obtaining metals from their ores by relating the elements to their positions in the reactivity series.

Self Assessment Checklist - Recycling of metals

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aDescribe metal ores as a finite resource and hence the need to recycle metals, e.g. recycling of iron.
bDiscuss the social, economic and environmental issues of recycling metals.

Self Assessment Checklist - Iron

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aDescribe and explain the essential reactions in the extraction of iron using haematite, limestone and coke in the blast furnace.
bDescribe steels as alloys which are a mixture of iron with carbon or other metals and how controlled use of these additives changes the properties of the iron, e.g. high carbon steels are strong but brittle whereas low carbon steels are softer and more easily shaped.
cState the uses of mild steel, e.g. car bodies; machinery, and stainless steel, e.g. chemical plants; cutlery; surgical instruments.
dDescribe the essential conditions for the corrosion (rusting) of iron as the presence of oxygen and water; prevention of rusting can be achieved by placing a barrier around the metal, e.g. painting; greasing; plastic coating; galvanising.
eDescribe the sacrificial protection of iron by a more reactive metal in terms of the reactivity series where the more reactive metal corrodes preferentially, e.g. underwater pipes have a piece of magnesium attached to them.
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