Polymers (AQA GCSE Chemistry): Flashcards
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What are polymers?
What are polymers?
Very long molecules made of many smaller units joined together
What are addition polymers?
What are addition polymers?
Artificial polymers made through addition reactions
What is addition polymerisation?
What is addition polymerisation?
Small molecules with double bonds join to make long chains
What are monomers?
What are monomers?
Small molecules that act as building blocks
What bond do monomers contain?
What bond do monomers contain?
double bond
What happens to bond in polymerisation?
What happens to bond in polymerisation?
It breaks and new single bonds form between molecules
Formula of ethene
Formula of ethene
C₂H₄
What does ethene form when polymerised?
What does ethene form when polymerised?
Poly(ethene)
What does propene form when polymerised?
What does propene form when polymerised?
Poly(propene)
Symbol for many repeating units in a polymer
Symbol for many repeating units in a polymer
n (after bracket)
Key feature 1: What bond must monomer have?
Key feature 1: What bond must monomer have?
double bond
Key feature 2: Atoms in repeating unit vs monomer
Key feature 2: Atoms in repeating unit vs monomer
Same atoms - none lost or gained
Key feature 3: Products of addition polymerisation
Key feature 3: Products of addition polymerisation
Only polymer forms - no other products