Key Area 4: Plastics Flashcards
Plastics are examples of materials known as?
Polymers
Polymers are?
Long chain molecuels
Polymers are formed by?
Joining together a large number of small molecules called monomers
Addition polymerisation is the name given to a chemical reaction in which?
Unsaturated monomers are joined forming a polymer
The names of addition polymers are derived from?
The name of the monomer used
Brackets can be used in polymer names to?
Aid identification of the monomer unit
The shortest section of a polymer chain is called a?
Repeating unit
A repeating unit is the shortest section of polymer chain, if repeated would?
Yield the complete polymer chain (except for the end groups)
The structure of a polymer can be drawn given either the?
Structure of the monomer or the repeating unit
From the structure of a polymer the monomer or repeating unit can be?
Drawn
Thermoplastics will
Soften on hearing and are usually pliable
Examples of thermoplastics are
polyethene
Thermosets do not
Soften in heating and they are hard and rigid
Examples of thermosets are
Bakealite
Addition polymerisation is a reaction with
Many small monomer molecules join to form one large polymer molecule and nothing else
The process in which plastics are made is called
Polymerisation
Polymers have a carbon
Backbone
Rubber is a
Natural addition molecule
Monomers will contain
Carbon to carbon double bonds C=C
What is the name given to long chain plastic molecules?
Polymers
The name given to small molecules that are reactants in polymerisation are
Monomers
All addition polymers have a “backbone” made up entirely of
Carbon atoms
The process in which plastics are made is called?
Polymerisation
The name given to long chain plastic molecules?
Polymer
