organic chemistry - synthetic and naturally occurring polymers Flashcards
what happens when alkenes are used in addition polymerisation?
they make polymers
give two examples of polymers
poly(ethene) and poly(propene)
what happens in addition polymerisation?
small molecules join together to create very large molecules
what are the small molecules called in addition polymerisation?
monomers
what is similar about a repeat unit and a monomer?
they have the same atoms as no other molecule is formed in the reaction
what should you remember when drawing out a polymer?
the bonds should come of the C’s and a little n outside the brackets
what does condensation polymerisation involve?
monomers with two functional groups
what happens when two monomers in condensation polymerisation?
they join together losing small molecules as water
how many functional groups are there in a molecule of an amino acid?
they have two in a molecule
what happens when amino acids react by condensation polymerisation?
they produce polypeptides
what does DNA stand for?
deoxyribonucleic acid
what id DNA?
it encodes genetic instructions for the development and functioning of living organisms
what are molecules made up of?
two polymer chains that are made from four different monomers and form a double helix
name three naturally occurring polymers
portions, starch and cellulose
