Chemie sulphur 0610

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Chemie sulphur 0610

  1. 1. STRUCTURE & B ODING OF PLASTIC SULPHUR
  2. 2. The start: <ul><li>1. In the begining the Sulphur is solid & yellow. </li></ul><ul><li>2. It consists of 8 Sulphur molecules. </li></ul>
  3. 3. When heated: 1. When you start heating the yellow solid at 112°C the solid turns into a liquid. 2. This happens because the weak Van der Waals bonds between the molecules are already break at a very low temperature. 3. Now the molecules can move around and we have a liquid.
  4. 4. Over 200°C <ul><li>1. When the temperature rises you can see the liquid in a very red-brown & thick state. </li></ul><ul><li>2. That happens because the covalent bonds (bonds between the atoms in a molecular) break and form a Polymer (one long chain). </li></ul>
  5. 5. 444°C <ul><li>1. When the thick, red-brown substance is heated to 444°C you can see a red-brown& now runny liquid. </li></ul><ul><li>2. The long polymer chain has broken again so you now have many shorter chains. </li></ul><ul><li>3. This allows the chains to move around and we have a liquid. </li></ul>
  6. 6. Runny liquid + water <ul><li>1. Last but not least you put the runny liquid into a glass filled water. </li></ul><ul><li>2. The solid liquid cools down and becomes a plastic solid. </li></ul><ul><li>3. This happens because the moving, short chains are stopped by the cold water . </li></ul>
  7. 7. <ul><li>Made by </li></ul><ul><li>Anne Schedel </li></ul>

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