Air Quality And Climate Continued
Overview
The air carries the signs of how we power our world: carbon dioxide that warms the climate, sulfur dioxide and oxides of nitrogen that turn rain acidic. Chemistry not only explains how these pollutants form, it also supplies the solutions, from catalytic converters to low-sulfur fuels and the trees that draw carbon dioxide back out of the air.
In this lesson you will learn the strategies that reduce climate change and acid rain, see how oxides of nitrogen form in car engines and how catalytic converters remove them, and study photosynthesis as the natural reaction that converts carbon dioxide and water into glucose and oxygen.
Objectives
- State and explain strategies to reduce the effects of these environmental issues, limited to: (a) climate change: planting trees, reduction in livestock farming, decreasing use of fossil fuels, increasing use of hydrogen and renewable energy, e.g. wind, solar (b) acid rain: use of catalytic converters in vehicles, reducing emissions of sulfur dioxide by using low-sulfur fuels and flue gas desulfurisation with calcium oxide.
- Describe photosynthesis as the reaction between carbon dioxide and water to produce glucose and oxygen in the presence of chlorophyll and using energy from light.
- State the word equation for photosynthesis, carbon dioxide + water → glucose + oxygen.
- [Supplement] Explain how oxides of nitrogen form in car engines and describe their removal by catalytic converters, e.g. 2CO + 2NO → 2CO + N 2 2.
- [Supplement] State the symbol equation for photosynthesis, 6CO + 6H O → C H O + 6O 2 2 6 12 6 2.
Lesson Note
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Lesson Evaluation
Congratulations on completing the lesson on Air Quality And Climate Continued. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.
You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.
Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.
- Which gas, released by burning fossil fuels, is a main cause of acid rain? A. carbon dioxide B. sulfur dioxide C. oxygen D. methane Answer: B
- Oxides of nitrogen form in a car engine because: A. nitrogen reacts with water B. the high temperature makes nitrogen and oxygen react C. petrol contains nitrogen D. the catalyst makes them Answer: B
- The products of the reaction 2CO + 2NO -> in a catalytic converter are: A. carbon and nitrogen B. carbon dioxide and oxygen C. carbon dioxide and nitrogen D. carbon monoxide and nitrogen Answer: C
- Which strategy helps reduce climate change? A. burning more coal B. planting trees C. cutting down forests D. using more petrol Answer: B
- Photosynthesis requires carbon dioxide, water, light and: A. nitrogen B. chlorophyll C. sulfur D. a catalytic converter Answer: B
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Recommended Books
Practice Mock Questions
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