Carboxylic acids, Esters, and synthetic polymers

• What are carboxylic acids?

  They are a homologous series of compounds that all contain a COOH functional group attached to a hydrocarbon chain.
• What is the general formula of carboxylic acids?

  CnH2nO2
• What are the properties of carboxylic acids?

  They are weak acids

  They turn blue litmus paper red
• What happens when you react A metal with a carboxylic acid?

  A salt and hydrogen gas are produced
• What happens when a carboxylic acid reacts with a metal carbonate?

  A salt , Carbon Dioxide and water are produced.
• What are esters?

  Esters are organic compounds formed by the reaction of an alcohol with a craboxylic acid . They have the functional group COO.
• What happens when we react an alcohol with an acid?

  An ester and water are produced.
• What do we call reactions that produce esters?

  Esterification reactions produce esters. Esters are formed when an alcohol reacts with a carboxylic acid .
• How is ethyl ethanoate produced?

  Ethyl Ethanoate is produced by heating ethanol and ethanoic acid in the prescene of a catalyst which is concentrated sulfuric acid.
• What are the two types of polymers?

  Addition polymer and condensation polymer.
• what is polymerisation?

  Joining up lots of small molecules , monomers to make one big molecule.
• What are monomers?

  Molecules which can join up to form a polymer.
• What is polypropene used for?

  It is used to make ropes and crates .
• What is low density polyethene used for?

  It is used for making polythene bags.
• What is high density polyethene used for?

  It is used to make plastic bottles.
• What is polycholorethene used for?

  It is used for clothes,water pipes, electrical insulation
• What is polytetrafluoroethene used for?

  It is used as a non stick coating for pots and pans.
• What are properties of addition polymers?

  They are inert and non-biodegradable.
• What does non-biodegradable mean?

  It means cannot be broken down by bacteria in the environment
• What is condensation polymerisation?

  Polymerisation of monomers in which each time two monomers combine a small molecule such as water is removed.
• What is condensation polymerisation?

  It is when a diol reacts with a dicarboxylic acid to produce a polyester and water.