Using ResourcesDiagram
LCA Case Studies and Comparisons
Part of Life Cycle Assessment — GCSE Chemistry
This diagram covers LCA Case Studies and Comparisons within Life Cycle Assessment for GCSE Chemistry. Revise Life Cycle Assessment in Using Resources for GCSE Chemistry with 20 exam-style questions and 12 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 6 of 16 in this topic. Focus on the labels, the relationships between parts, and the explanation that turns the diagram into an exam-ready answer.
Topic position
Section 6 of 16
Practice
20 questions
Recall
12 flashcards
LCA Case Studies and Comparisons
Plastic Bags vs Paper Bags vs Cotton Tote Bags
- Paper bags: Higher energy to produce, more water pollution, heavier transport emissions, but biodegradable
- Plastic bags: Lower production energy but persist for centuries, contribute to marine pollution
- Cotton tote bags: Very high production impact, must be used 130+ times to offset plastic bag impact
- Conclusion: Context matters - consider reuse potential and disposal methods
Electric vs Petrol Cars
- Electric cars: Higher manufacturing impact (battery production), but lower use phase emissions
- Petrol cars: Lower manufacturing impact, but much higher lifetime emissions from fuel
- Key factor: Electricity source (renewable vs fossil fuel grid)
- Break-even point: ~30,000-50,000 miles depending on electricity source
Smartphone LCA
- Manufacturing stage: 85% of total environmental impact
- Rare earth mining: Major biodiversity and water pollution impacts
- Use phase: Relatively low impact (charging energy)
- E-waste: Growing problem with toxic materials and low recycling rates