C2 Metals, Reactivity and Extraction
Reactivity series, reactions with air, water and acids, displacement, ores, extraction and corrosion.
How to study for CCEA GCSE Double Award Science
Build each scientific explanation from a model or relationship, show quantitative working, and connect every practical claim to controlled evidence and evaluation.
Core concepts
Concept 1
A metal's reactivity reflects its tendency to form positive ions and predicts displacement and reactions with water or acid.
Exam cue: Identify the scientific model, relationship or practical evidence required by the command word.
Concept 2
Extraction method depends on position relative to carbon and on energy, cost and environmental considerations.
Exam cue: Use observations or ion formation to place an unfamiliar metal and justify the extraction or protection method.
Concept 3
Corrosion requires stated conditions and can be prevented by barrier or sacrificial methods.
Exam cue: Use the current CCEA specification formatting and entered tier to decide whether Higher-only detail applies.
Risk pitfalls and guardrails
Treating the reactivity series as a list without linking it to electron loss and experimental evidence.
Guardrail: Do not import another board or science route, omit units from a calculation, or make a scientific claim beyond the stated evidence.
Giving a remembered fact without connecting it to the stated data, observation or scenario.
Guardrail: Do not import another board or science route, omit units from a calculation, or make a scientific claim beyond the stated evidence.
Importing content or paper structure from a separate-science or non-CCEA specification.
Guardrail: Do not import another board or science route, omit units from a calculation, or make a scientific claim beyond the stated evidence.
Memory anchors
Reactivity series
Ordering of metals by tendency to react and form positive ions.
Displacement reaction
A more reactive metal replaces a less reactive metal ion.
Ore
Rock containing enough of a substance for useful extraction.
Reduction
Gain of electrons or removal of oxygen in the stated context.
Corrosion
Chemical deterioration of a metal through environmental reaction.
Sacrificial protection
Using a more reactive metal to corrode in preference to another.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
Among the listed metals, which gives the most vigorous reaction with cold water?
Magnesium is added to dilute hydrochloric acid. Which gaseous product should be collected?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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