Air Quality And Climate (continued)
Gbogbo ọrọ náà
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.
Ebumnobi
- 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.
Nkuzi Olu
Gee ntị na nkuzi a na ngwa
Maapụ uche
E seela isiokwu a ka ị hụ otu echiche si ejikọta.
Mepee maapụ uche na ngwa
Kaadị ncheta
Omume ncheta ngwa ngwa n'ihe a na-anwale n'isiokwu a.
Mee omume kaadị ndị a na ngwa
Akwụkwọ Ọmụmụ
Ndetu Nkuzi Zuru Ezu di na Ngwa Green Bridge
Nweta ngwa Green Bridge CBT na ekwenti gi ma o bu kompiuta maka ulo akwukwo IGCSE zuru oke: akwukwo ule ndi gara aga, usoro nyocha, eserese uche, kaadi omumu na nkuzi olu.
Nnyocha Ọmụmụ
Ekele diri gi maka imecha ihe karịrị na Air Quality And Climate (continued). Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- 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
Rue ajuju ndi a n'ime ngwa ahu
Rue ajuju ndi a n'ime ngwa ahu
Akwụkwọ A Na-atụ Aro
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Air Quality And Climate (continued)? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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