Pollutants – Lesson & Worksheet – Unit 4 – IGCSE Chemistry

Pollutants – Lesson & Worksheet – Unit 4 – IGCSE Chemistry
Nitrogen Oxides, Sulphur Dioxide, Acid Rain & Catalytic Converters

This Synapse Science resource explores the formation of harmful gases during combustion and their environmental impacts. It explains how high engine temperatures form nitrogen oxides, how impurities in fuels produce sulphur dioxide, and how these gases contribute to acid rain.

This resource includes a full lesson and student worksheet, ideal for both classroom teaching and revision.

TOPICS COVERED – SPECIFICATION POINTS

• 4.14: Know that, in car engines, the temperature reached is high enough to allow nitrogen and oxygen from air to react, forming oxides of nitrogen
• 4.15: Explain how the combustion of some impurities in hydrocarbon fuels results in the formation of sulphur dioxide
• 4.16: Understand how sulphur dioxide and oxides of nitrogen contribute to acid rain

WHAT’S INCLUDED

• Editable PowerPoint lesson with key theory and diagrams
• Printable worksheet with structured questions and application tasks
• Explanation of how catalytic converters reduce nitrogen oxide emissions
• Real-world impacts of acid rain and pollution
• Scaffolded review section ideal for assessment or homework

KEY FEATURES

• Clear layout with step-by-step reactions and atmospheric processes
• Visuals for catalytic converters and pollution effects
• Fully aligned with Unit 4 of Edexcel IGCSE Chemistry (Paper 1)
• Matches Synapse Science format for consistency across the course

KEYWORDS
Edexcel IGCSE Chemistry, Nitrogen Oxides, Sulphur Dioxide, Acid Rain, Pollution, Catalytic Converters, Hydrocarbon Combustion, Synapse Science, Worksheet, Lesson, Unit 4, Environmental Chemistry