Chemistry revision

• Early Atmosphere


  Evolved over billions of years ago, volcanoes produced carbon dioxide, nitrogen (and a bit of methane and ammonia)
• Formation of oceans

  1. Water cooled and condensed

  2. Carbon dioxide dissolved in the oceans

  3. Carbonates precipitated (turned into solid bits) to form sediments
• Greenhouse Gases


  Carbon dioxide and methane
• Climate change


  Greenhouse gases interact with infrared radiation, increasing temperatures on Earth
• Greenhouse Effect


  1. Earth's atmosphere traps infrared radiation

  2. Greenhouse gases absorb and re-emit infrared radiation
• Pollutants are cases released in combustion of fossil fuels and have effects
• Photosynthesis


  1. Green plants and algae took in CO2

  2. Released O2
• Sedimentary rocks and fossil fuels were formed, decreasing CO2 levels by 80%
• Greenhouse gases interact with longer wavelength infrared radiation
• Human activities have increased the levels of carbon dioxide (CO2) and methane (CH4)
• Deforestation has increased carbon dioxide levels
• Methane is a more potent greenhouse gas than carbon dioxide
• Nitrogen is a major component of the atmosphere
• Carton


  High tempature of mopianity problems
• The engine


  Meron to Deared with
• Combustion


  1. By combustion

  2. Colourisas and

  3. Manarele of hydrocarbon, so not easily desc

  4. Waber

  5. Uapour
• Fuels


  • When the fuel is burned
  • Less of
  • In insufficent asygen
  • By compete comics cousce global
  • Of sydrocarbons
• Fuels


  • And make Chaba
  • Enchances green hou
  • Carbon
  • Diokide
  • By complete
• Combustion of hydro-efect


  Carbon fuels
• Unburend if deasle does not thing damage

  Fuel/sold completely burn Tiny global diming
• Solid particies.un-

  • Polant
  • Burnt fuels are
  • Produced
  • And other greenhouse gases
• Of a product


  We cycle
• Comb of fuels


  • Deention to Substance that burns with oxygen is
  • Release heat enery eg hydrocarbon
• Compde combustion of fuels

  • Fuglaron carbon dioxide twater
• Combustion of a candie

  • Deaces,
  • Than a bach
  • Sum
  • Reass
  • Of Light, when ne
• Funel

  • Shoping bags
  • Ught
  • Colbab
  • Chioride
  • Paper
• Tap Co

  • Pump
  • Une water
• Test for carbon dioxide

  • Lime water goes from clear to cloudy
• Best for water


  • Colbalt chloride paper goes from blue
• Rink


  Fuel + oxygen carbon monoxide Flarson + water
• Carbon monoxide


  Colourless toxic posion gas
• Carbon black


  Sot solid
• Carbon datin


  Carbon footprint
• Carbon footprint


  Amounts of carbon dioxide and other greenhouse gases given out othe the full ure cycle of a product
• High carbone footprint countries

  • Usa
  • China
  • Russia
• Reducing carbone footprint


  1. Walks or cycle

  2. Turn of electrical devices

  3. Turn of Light

  4. Have a shower rather than a bath

  5. Reuse shoping bags
• Combustion


  Release hea
• Complete co


  • Fuel an
  • Combust
• Greenhouse afech


  • Greenhouse
  • Carbon DLOW de
  • Burning fasil Furlanhouse
• Decomposting tred


  • Efects
  • Mether
  • Farm animais