Methane Jeremy Smith Green December 17th, 2008 Found in the most unlikely places…
Structure The gas methane (CH ₄)  is composed of … <ul><li>1 Carbon atom </li></ul><ul><li>4 Hydrogen atoms </li></ul>+ Ca...
Bonding <ul><li>Polar Covalent Bond </li></ul><ul><ul><li>Forms when the atoms are from different elements </li></ul></ul>...
Examples <ul><li>Mining of coal </li></ul><ul><li>Production of natural gas and oil </li></ul><ul><li>Transportation of na...
Properties <ul><li>CH 4  (1 Carbon atom, 4 Hydrogen atoms)  </li></ul><ul><li>Density ……….. 0.717 kg/m 3 , gas  </li></ul>...
Common uses <ul><li>Natural gas is composed of 85% methane </li></ul>How do we use methane? How do other organisms use met...
In the Atmosphere <ul><li>Decomposition in: </li></ul><ul><ul><li>Rice paddies </li></ul></ul><ul><ul><li>Dumps </li></ul>...
Effects 1921 Now 50% decrease in size <ul><li>Floods </li></ul><ul><ul><li>Homes, roads, and buildings are destroyed </li>...
http://www.pbs.org/frontlineworld/watch/player.html?pkg=africa705&seg=1&mod=0 http://www.teachersdomain.org/asset/tdc02_vi...
Change How we can change: How the world can change: <ul><li>Take the metro – not a train or car </li></ul><ul><li>Get your...
Quiz <ul><li>What 2 molecules is methane composed of, and how many of each? </li></ul><ul><ul><li>1 carbon, 4 hydrogen </l...
Sources &quot;Alkane.&quot;  Wikipeida . 14 Jan. 2009 <http://en.wikipedia.org/wiki/Alkane>.  Ceramic tiles . 15 Jan. 2009...
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Jeremy Smith Methane

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Jeremy Smith Methane

  1. 1. Methane Jeremy Smith Green December 17th, 2008 Found in the most unlikely places…
  2. 2. Structure The gas methane (CH ₄) is composed of … <ul><li>1 Carbon atom </li></ul><ul><li>4 Hydrogen atoms </li></ul>+ Carbon Hydrogen 6 2 4 C 12.0107 amu H H H H C 6 protons 6 neutrons 6 electrons 1 proton no neutrons 1 electron x = 4.03176 amu 4.03176 au + 12.0107 au = 16.04246 amu 1.00794 amu Structure of an element Atomic Number Chemical Symbol Chemical Name Atomic Weight Electronic Configuration 1 1 H Carbon Hydrogen Atomic Mass of Methane: 16.04246 amu x 4
  3. 3. Bonding <ul><li>Polar Covalent Bond </li></ul><ul><ul><li>Forms when the atoms are from different elements </li></ul></ul><ul><ul><li>One will attract the electrons more strongly </li></ul></ul><ul><li>Non - Polar Covalent bond </li></ul><ul><ul><li>Forms when the atoms are from the same element </li></ul></ul><ul><ul><li>Neither will attract the atoms with more force than the other </li></ul></ul>How does it work? Carbon has 4 electrons on its valence shell. Hydrogen has 1 electron on its valence shell. Since neither is a metal or close to completing their outer shell, they bond covalently. The atoms will gravitate towards toward the carbon atom because it is stronger. What type of bond is formed between the hydrogen and carbon atom? What type of covalent bond forms? <ul><li>Covalent Bond </li></ul><ul><ul><li>Forms between atoms that share valence electrons to fill their valence shell </li></ul></ul>Methane
  4. 4. Examples <ul><li>Mining of coal </li></ul><ul><li>Production of natural gas and oil </li></ul><ul><li>Transportation of natural gas and oil </li></ul><ul><li>  </li></ul><ul><li>Ice </li></ul><ul><li>Natural Gas </li></ul><ul><li>Coal </li></ul><ul><li>Decomposition in: </li></ul><ul><ul><li>Rice paddies </li></ul></ul><ul><ul><li>Swamps </li></ul></ul><ul><ul><li>Wetlands </li></ul></ul><ul><ul><li>Landfills </li></ul></ul><ul><li>Tropical termites separating it from other substances </li></ul><ul><li>Live plants </li></ul><ul><li>Melting permafrost, because the ice contains methane </li></ul><ul><li>The excretion of substances from a cow’s digestive system (cows pooping and farting) </li></ul>Naturally produced by: Unnaturally produced by the: Naturally found in:
  5. 5. Properties <ul><li>CH 4 (1 Carbon atom, 4 Hydrogen atoms) </li></ul><ul><li>Density ……….. 0.717 kg/m 3 , gas </li></ul><ul><li>Boiling point ………. -161.5˚ C, -258. 7˚ F, 112 K </li></ul><ul><li>Melting point ………. -182.5˚ C, -296.5˚ F, 91 K </li></ul><ul><li>Freezing point ……….-182.5˚ C, -296.5˚ F, 91 K </li></ul><ul><li>Atomic weight ………. 16.04246 amu </li></ul><ul><li>Colorless </li></ul><ul><li>Odorless </li></ul><ul><li>Toxic </li></ul><ul><li>Not radioactive </li></ul><ul><li>Extremely unstable </li></ul>
  6. 6. Common uses <ul><li>Natural gas is composed of 85% methane </li></ul>How do we use methane? How do other organisms use methane? <ul><li>Ice worms as natural habitats </li></ul><ul><li>Ballooning </li></ul><ul><li>Ceramic tiles </li></ul><ul><li>Clothes dryers </li></ul><ul><li>Cooking stoves </li></ul><ul><li>Furnaces </li></ul><ul><li>Kilns </li></ul><ul><li>Water heaters </li></ul>
  7. 7. In the Atmosphere <ul><li>Decomposition in: </li></ul><ul><ul><li>Rice paddies </li></ul></ul><ul><ul><li>Dumps </li></ul></ul><ul><ul><li>Wetlands </li></ul></ul><ul><ul><li>Landfills </li></ul></ul><ul><li>Cows </li></ul><ul><li>Coal mining </li></ul>Carbon dioxide production through the burning of methane: = Heat / Energy Earth unaffected by excess greenhouse gasses Earth with excess greenhouse gases in its atmosphere = greenhouse gases <ul><li>Oxidative Pyrolysis </li></ul><ul><li>CH 4  + O 2  -> CO + H 2  + H 2 O </li></ul><ul><li>H 2 Oxidification </li></ul><ul><li>C 2 Oxidification </li></ul>= <ul><li>2H 2  + O 2  ->2H 2 O </li></ul><ul><li>2CO + O 2  ->2CO 2 </li></ul>[CH 4 (g) + 2O 2 (g) -> CO 2 (g) + 2H 2 O(l)] = 1 Carbon Dioxide molecule (gaseous form) and 2 Water molecules (liquid form) <ul><li>Global warming raises the temperature of the ocean </li></ul><ul><li>Consequently, the methane at the bottom of the ocean heats up and is released </li></ul>Excess methane is being added to the atmosphere through: Global Warming: Sun Sun
  8. 8. Effects 1921 Now 50% decrease in size <ul><li>Floods </li></ul><ul><ul><li>Homes, roads, and buildings are destroyed </li></ul></ul><ul><li>Stronger and more hurricanes </li></ul><ul><ul><li>Have caused millions of deaths </li></ul></ul><ul><li>Droughts </li></ul><ul><ul><li>Hundreds of people have died in battles over water in undeveloped countries </li></ul></ul><ul><li>Rising sea levels </li></ul><ul><ul><li>People are forced to evacuate their homes </li></ul></ul><ul><li>Rising sea temperature </li></ul><ul><ul><li>Change in fishing patterns </li></ul></ul><ul><ul><ul><li>Unemployment </li></ul></ul></ul><ul><li>Extinction of species </li></ul><ul><li>Forest fires </li></ul><ul><li>  </li></ul><ul><li>  </li></ul>
  9. 9. http://www.pbs.org/frontlineworld/watch/player.html?pkg=africa705&seg=1&mod=0 http://www.teachersdomain.org/asset/tdc02_vid_greenhouse/
  10. 10. Change How we can change: How the world can change: <ul><li>Take the metro – not a train or car </li></ul><ul><li>Get your parent/guardian to use an energy efficient car </li></ul><ul><li>Walk or carpool to school </li></ul><ul><li>If possible, install solar panels </li></ul><ul><li>Buy less meat </li></ul><ul><li>Buy less rice </li></ul><ul><li>Recycle </li></ul><ul><li>Write to an official to sign a “no pollution” contract </li></ul><ul><li>Create better infrastructure in Africa and Asia </li></ul><ul><li>Produce less meat, rice </li></ul><ul><li>China can stop mining coal </li></ul><ul><li>Use cleaner energy sources </li></ul><ul><li>Install eco – friendly energy producers </li></ul>
  11. 11. Quiz <ul><li>What 2 molecules is methane composed of, and how many of each? </li></ul><ul><ul><li>1 carbon, 4 hydrogen </li></ul></ul><ul><li>What is one natural origin of methane (this can be how it is produced naturally)? </li></ul><ul><ul><li>Ice </li></ul></ul><ul><ul><li>Natural gas </li></ul></ul><ul><ul><li>Coal </li></ul></ul><ul><ul><li>Decomposition in: </li></ul></ul><ul><ul><ul><li>Rice paddies </li></ul></ul></ul><ul><ul><ul><li>Swamps </li></ul></ul></ul><ul><ul><ul><li>Wetlands </li></ul></ul></ul><ul><ul><ul><li>Landfills </li></ul></ul></ul><ul><ul><li>Tropical termites separating it from other substances </li></ul></ul><ul><ul><li>Live plants </li></ul></ul><ul><ul><li>Melting permafrost, because the ice contains methane </li></ul></ul><ul><ul><li>The excretion of substances from a cow’s digestive system (cows pooping and farting) </li></ul></ul><ul><li>What type of bond does a hydrogen atom form with a carbon atom? </li></ul><ul><ul><li>A polar covalent bond </li></ul></ul><ul><li>Does Methane have a natural color or odor? </li></ul><ul><ul><li>No </li></ul></ul>
  12. 12. Sources &quot;Alkane.&quot; Wikipeida . 14 Jan. 2009 <http://en.wikipedia.org/wiki/Alkane>. Ceramic tiles . 15 Jan. 2009 <http://www.tierrayfuego.com/Ceramic_Tiles/images/ 20505_ceramic_tile_terra_cotta_cracke_tiles.jpg>. Climate change. 15 Jan. 2009 <http://www.topnews.in/files/Climate-Change.jpg>. Clothes dryer. 15 Jan. 2009 <http://www.sears.com/shc/s/p_10153_12605_02609477000P>. Coal chunks. 15 Jan. 2009 <http://i.treehugger.com/images/2007/5/24/coal%20chunks.jpg>. Cooktops . 15 Jan. 2009 <http://www.geappliances.com/products/introductions/cooktops/images/ background_cooktop.jpg>. Gas water heater . 15 Jan. 2009 <http://www.lakewoodconferences.com/direct/dbimage/50151706/ Gas_Water_Heater.jpg>. Greenhouse Gases . 15 Jan. 2009 <http://www.flickoff.org/book/export/html/179>. Hot - air -balloon . 15 Jan. 2009 <http://amlifestyle.files.wordpress.com/2008/07/ hot-air-balloon.jpg>. Hurricane Katrina . 14 Jan. 2009 <http://www.killedthat.com/wp-content/uploads/2007/08/ hurricane-katrina.jpg>. &quot;Methane.&quot; Wikipedia . 14 Jan. 2009 <http://en.wikipedia.org/wiki/Methane>. Microsoft Student with Encarta Premium 2008 DVD . CD-ROM. 2008 ed. Periodic Table of Elements . 14 Jan. 2009 <http://dayah.com/periodic/>. Rice paddie. 15 Jan. 2009 <http://isobe.typepad.com/sketchpad/images/rice_paddy.jpg>. Sad smiley face. 15 Jan. 2009 <http://www.freeiconsweb.com/Freeicons/Face_icon/Sad_cry.png>. Smiley face. 15 Jan. 2009 <http://www.thealzheimerspouse.com/images/Smiley-face-779143.gif>.
  13. 13. The End

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