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Odd One Out

Odd One Out. Think of these molecules they all have something in common but one is slightly different. Rubber. DNA. Polyethene. Protein. Polythene is a man made polymer. Polymers!. What are polymers?.

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Odd One Out

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  1. Odd One Out • Think of these molecules they all have something in common but one is slightly different Rubber DNA Polyethene Protein Polythene is a man made polymer

  2. Polymers!

  3. What are polymers? Polymers are very large molecules made when hundreds of monomers join together to form long chains. The word ‘polymer’ comes from the Greek words poly (meaning ‘many’) and meros(meaning ‘parts’). Plastics are synthetic polymers that can be shaped by heat or pressure.

  4. covalent bond What keeps the chain together? The monomers in a polymer are joined together by covalent bonds between atoms. In a covalent bond, each atom shares one or more electron with another atom. The bonds are sometimes shown as sticks.

  5. addition polymerization polymer Addition polymerization Polyethene (sometimes called polythene) is a polymer made from ethene. The process by which polyethene and other polymers is made is called addition polymerization(Adding ethenes together monomers

  6. Time to get up and try polymerization 6 Volunteers front and center Now everyone up lets have a go!!!!

  7. Polymer Chains • Cut out the monomer in front of you • Fold round till bonds with no atoms on come together this will be your double bond! • Break the double and join your atom to the person sat next to you’s one. And glue • Find another table with the same monomer as your table and join to their chain and so on…….

  8. How is polyethene made?

  9. Drawing polymers – shorthand formulae Polymers contain thousands of molecules, so how can their structures be easily drawn? Part of the polymer molecule can be drawn: A better way is to show a shorthandformula: The ‘n’ means that the polymer contains a very large number of the repeating unit shown in the brackets.

  10. polypropene What’s the polymer? What is the shorthand formula for polypropene? The monomer is propene (C3H6): which canbe drawn as: 1. Draw two C atoms that were in the double bond with a single covalent bond. 2. Draw the brackets and the ‘n’. 3. Add the links outside the brackets. 4. Add the atoms that were attached to each C atom of the double bond.

  11. Try and name the polymer • Ethene • Propene • Styrene • Vinyl Chloride • Ethene terephthalate

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