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On this day in Chemistry HistoryOn this day in Chemistry History
http://www.rsc.org/learn-chemistry/collections/chemistry-calendar/may-13#otdic_
13th May, 2013
.
American chemist John Bailar
was born on this day in 1904.
He discovered that isomers could
exist in inorganic compounds. Bailar
became recognised as the “father of
American coordination chemistry”.
Isomers?
Compounds with the same chemical
composition but different structural
formulas,
Last Thursday (9th
May, 2013)…
• It was announced that the concentration of
atmospheric carbon dioxide had breached
the symbolically important level of
400ppm.
• For first time in 500M years.
28. global warming
Why is this important?
• Link with global warming (climate change)
Objectives
IGCSE Chemistry (Core)
• State that carbon dioxide and methane are greenhouse
gases and may contribute to climate change.
• IGCSE Combined Science (Chemistry, Supplement)
• Explain why the proportion of carbon dioxide in the
atmosphere is increasing, and why this is important.
Composition of the Atmosphere
90% of the mass of the atmosphere is in the lowest 16km
(troposphere).
This is the part we refer to as ‘air’
28. global warming
28. global warming
28. global warming
Mauna Loa Observatory,
Hawaii
28. global warming
28. global warming
28. global warming
Effects on Plants and Animals
Effects on Plants and Animals
Within the next 70 years:
• Habitats for a third (34%) of land animal species
halved.
• Habitats for half (57%) the World’s plant species
halved.
• Reptiles and amphibians at greatest risk.
• Largest losses predicted from sub-Saharan
Africa, Central America, Amazonia and
Australia.
Nature Climate Change, May 2013
Pests and Diseases
• Higher temperatures suspected of
contributing to spread of blue-tongue
disease in sheep and cattle in Britain.
• Transmitted by midge, Culicoides imicola.
28. global warming
28. global warming
28. global warming
28. global warming
28. global warming
Other Greenhouse Gases
One-third of the World’s methane emissions (900bn tonnes p.a.)
come from the gut bacteria of farm animals.
Tasks
IG2 + IG3 (Exam candidates): Answer Qs
on AS exam paper.
IG1. Make a poster describing the
‘greenhouse effect’

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28. global warming

  • 1. On this day in Chemistry HistoryOn this day in Chemistry History http://www.rsc.org/learn-chemistry/collections/chemistry-calendar/may-13#otdic_ 13th May, 2013 . American chemist John Bailar was born on this day in 1904. He discovered that isomers could exist in inorganic compounds. Bailar became recognised as the “father of American coordination chemistry”. Isomers? Compounds with the same chemical composition but different structural formulas,
  • 2. Last Thursday (9th May, 2013)… • It was announced that the concentration of atmospheric carbon dioxide had breached the symbolically important level of 400ppm. • For first time in 500M years.
  • 4. Why is this important? • Link with global warming (climate change) Objectives IGCSE Chemistry (Core) • State that carbon dioxide and methane are greenhouse gases and may contribute to climate change. • IGCSE Combined Science (Chemistry, Supplement) • Explain why the proportion of carbon dioxide in the atmosphere is increasing, and why this is important.
  • 5. Composition of the Atmosphere 90% of the mass of the atmosphere is in the lowest 16km (troposphere). This is the part we refer to as ‘air’
  • 13. Effects on Plants and Animals
  • 14. Effects on Plants and Animals Within the next 70 years: • Habitats for a third (34%) of land animal species halved. • Habitats for half (57%) the World’s plant species halved. • Reptiles and amphibians at greatest risk. • Largest losses predicted from sub-Saharan Africa, Central America, Amazonia and Australia. Nature Climate Change, May 2013
  • 15. Pests and Diseases • Higher temperatures suspected of contributing to spread of blue-tongue disease in sheep and cattle in Britain. • Transmitted by midge, Culicoides imicola.
  • 22. One-third of the World’s methane emissions (900bn tonnes p.a.) come from the gut bacteria of farm animals.
  • 23. Tasks IG2 + IG3 (Exam candidates): Answer Qs on AS exam paper. IG1. Make a poster describing the ‘greenhouse effect’