IB myp 4-5 Chemistry – Practice Questions- All Topics
Topic :The atmosphere -Testing and Treatment
Topic :The atmosphere- Weightage : 21 %
All Questions for Topic : Characteristics of gases,Atmospheric composition,Testing and Treatment,Extraction,Emission and environmental Implications
Question (14 marks)
The graphs below show blood lead levels in the US population and their correlation with learning difficulties:
Graph 1: Blood Lead Levels 1976-1999
Graph 2: Learning Difficulties vs Lead Levels
Discuss the implications of removing lead from paint and manufacturing processes (14 marks)
Write between 200-300 words.
▶️ Marking Guidance
Band Criteria
Basic (1-4 marks)
- Mentions lead toxicity
- Notes lead level changes
- Simple statements
Intermediate (5-9 marks)
- Links lead to health effects
- Describes trend patterns
- Basic societal impact
Advanced (10-14 marks)
- Detailed mechanism discussion
- Analyzes both graphs
- Comprehensive societal appraisal
Key Points to Include
- Health impacts: Neurological damage, especially in children
- Graph trends: Correlation between lead reduction and decreased learning difficulties
- Historical context: Lead in paint, gasoline, and pipes
- Economic impacts: Costs of regulation vs. healthcare savings
- Policy effectiveness: Success of ban implementations
Tip: Structure your answer with clear paragraphs addressing each marking point.