| Method |
Precise Learning Objective |
Linked |
Question / Activity
(Designed for maximum working out) |
Stepping Stones |
Pitstop Check
(Thinking Map) |
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Polymers are very large molecules. |
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What sort of molecules are polymers? Molymods
create different examples of polymers eg; polyethene |
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For example: ethane diol and hexanedioic acid polymerise to produce a polyester. |
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What two monomers form polyester? Dissolve polystyrene chunks into acetone |
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The atoms in the polymer molecules are linked to other atoms by strong covalent bonds. |
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What type of bond links individual monomers together when forming a polymer? |
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Alkenes can be used to make polymers such as poly(ethene) and poly(propene) by addition polymerisation. Use models to represent addition polymerisation. |
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What type of hydrocarbons are used to make polymers? Making bouncy balls or slime |
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The intermolecular forces between polymer molecules are relatively strong and so these substances are solids at room temperature. |
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Why are polymers solids at room temperature? |
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In addition polymerisation reactions, many small molecules (monomers) join together to form very large molecules (polymers). |
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What happens in an addition polymerisation reaction? |
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Students should be able to recognise polymers from diagrams showing their bonding and structure. |
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For example (displayed formula showing ethene monomer becoming poly(ethene)). |
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How is a polymer of poly(ethene) produced from ethene? (Show using a diagram) |
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In addition polymers the repeating unit has the same atoms as the monomer because no other molecule is formed in the reaction. |
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(Chem only) How is the structure of the repeated unit of an addition polymer related to the monomer? |
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Students should be able to recognise addition polymers and monomers from diagrams in the forms shown and from the presence of the functional group C=C in the monomers |
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(Chem only) How can you identify if you have a polymer or a monomer structure? |
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Students should be able to draw diagrams to represent the formation of a polymer from a given alkene monomer |
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Students should be able to relate the repeating unit to the monomer. |
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