Ozon Guides d'étude, Notes de cours & Résumés

C6e: Depletion of the ozone layer | Questions and verified Solutions Latest Update Explain why the use of CFCs has been banned in the UK - Answer - • society has agreed with scientists' views that CFCs deplete the ozone layer. Describe and explain how scientists' attitude to CFCs has changed: - Answer - • initial enthusiasm for the use of CFCs based upon their inertness • later discovery of ozone depletion and link to presence of CFCs • acceptance by scientists and the rest o...

5) air pollution 2 - ozone and CFC'S | Questions and Verified Solutions Latest Update What is an allotrope? - Answer - Different forms of pure elements An allotrope is a form of an element that is chemically distinct from other forms of the same element. Graphite and diamond are two allotropes of carbon. What is the structure of ozone? - Answer - O3 Where is the 'ozone layer'? - Answer - stratosphere Is ozone in the troposphere good or bad? What about in the stratosphere? - Answer - t...

OCR A - A Level Chemistry - Quiz Bite on CFCs and Ozone -questions and answers

CFC's and the ozone layer | Questions and Correct Solutions Latest Update 2024 CFCs are organic molecules that contain 3 elements: - Answer - carbon, chlorine and fluorine CFCs are both non - Answer - toxic or flammable and start off unreactive In water CFCs are - Answer - insoluble CFCs have a low - Answer - boiling point CFCs were used in - Answer - refrigerators, air conditioning systems, propellants and aerosol spray cans In 1974 discovered the truth behind CFCs which was that - Answ...

5) air pollution 2 - ozone and CFC'S Questions and Answers 2023 What is an allotrope? Different forms of pure elements An allotrope is a form of an element that is chemically distinct from other forms of the same element. Graphite and diamond are two allotropes of carbon. What is the structure of ozone? O3 Where is the 'ozone layer'? stratosphere Is ozone in the troposphere good or bad? What about in the stratosphere? troposphere = bad stratosphere = good W...

CFC's and Ozone Depletion Questions and Answers 2023 What is the full name for "CFCs"? Chlorofluorocarbon Why were CFCs developed and how were they used? Humans synthesized the production of CFCs because they are nontoxic, nonflammable, cheap and widely available. They revolutionized air conditioning making it readily accessible for homes, offices, schools, cars etc. CFC technology transformed the economy as it spurred the growth of humid/hot countries. Chemical Formula for C...

CFC's and the ozone layer Questions and Answers 2023 CFCs are organic molecules that contain 3 elements: carbon, chlorine and fluorine CFCs are both non toxic or flammable and start off unreactive In water CFCs are insoluble CFCs have a low boiling point CFCs were used in refrigerators, air conditioning systems, propellants and aerosol spray cans In 1974 discovered the truth behind CFCs which was that the chlorine inside CFCs helped destroy ozone ...

C6e: Depletion of the ozone layer Questions and Answers 2023 Explain why the use of CFCs has been banned in the UK • society has agreed with scientists' views that CFCs deplete the ozone layer. Describe and explain how scientists' attitude to CFCs has changed: • initial enthusiasm for the use of CFCs based upon their inertness • later discovery of ozone depletion and link to presence of CFCs • acceptance by scientists and the rest of the world community that the use o...

EPA 608 Core Test Sample Questions |UPDATED| 2024/2025 As of what date did it become unlawful to release Class 1 and Class II refrigerants to the atmosphere? a. July 1, 1992 b. July 1, 1993 c. November 14, 1994 d. January 1, 1996 *Ans* a. July 1, 1992 What is the ozone layer and why is it important to us on Earth? a. Thin layer of R-22 in the atmosphere that filters UV. b. Protective shield for Earth from the sun's harmful ultraviolent (UV) rays in the stratosphere layer that extends...

CCDS Science Exam Questions on ozone and atmosphere questions and answers already passed 2024