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Paper 2
Using Resources
Both
Potable water: safe to drink, not pure. Use filtration and sterilisation.
Key Facts
- Alloys improve properties of metals.
- Finite resources require sustainable use.
Topics Covered
Potable Water
What you need to know
- •Filtration removes solids; sterilisation kills microbes.
- •Distillation gives pure water.
Exam Tips
- State that potable means safe to drink, not pure.
Life Cycle Assessments
What you need to know
- •LCA compares environmental impacts from extraction to disposal.
- •Recycling often saves energy and raw materials.
Exam Tips
- Give one impact: energy use or pollution.
Key Terms
Life cycle assessment
Analysis of environmental impacts over a product life.
Potable
Water that is safe to drink.
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Common Exam Questions
Give one benefit and one drawback of recycling plastic.
4 marksmediumPaper 2
Model Answer
Benefit: reduces landfill and saves crude oil. Drawback: sorting and transport uses energy.
What examiners want to see
- ✓One benefit and one drawback.
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