WorksheetsPolymers
Total questions: 15
Worksheet time: 24mins
Once formed, it can be heated and reformed over and over again
thermoset
thermoplastic
elastomer
kevlar
Thermoplastic have...
good surface finish, UV resistance, recyclabillity
good surface finish, low strength, can't be reformed with heat
good dimensional stability, low strength, good heat resistance
high regidity, UV resistant, can be reformed with heat
Plastic bottles are fabricated by using which method
Rotational molding
Injection molding
Blow molding
Extrusion
Large molecules made up of small monomers are called
polymers
peptides
peptones
monomers
Which of these is an example of synthetic polymer?
cotton fibers
rubber
wool
polyvinyl chloride (PVC)
A chain of repeating units (called monomers)
monomer
dimer
replicate
polymer
A polymer made in the laboratory (or industry) usually made from petrochemicals
nature polymer
natural polymer
protein
synthetic polymer
A thermoplastic polymer will be ______________________.
below its glass transition temperature.
soft and flexible
rigid and brittle
translucent
rubbery
Nylon is which sort of polymer?
Thermosetting
Elastomer
Ferrous
Thermo plastic
Thermosetting Plastics
Can be reshaped using heat and pressure.
Are lighter plastics
Can be recycled
Can not be reshaped using heat and pressure
Which two of the following are plastic forming processes?
Sand casting
Rotational moulding
Upset moulding
Line moulding
Blow moulding
The product shown is most likely to be made out of
Bakelite
Acrylic
Urea formaldehyde
ABS
ABS is which sort of polymer?
Thermo plastic
Thermosetting plastic
Elastomer
Composite
Urea formaldehyde is which sort of polymer?
Thermo setting
Thermo plastic
Elastomer
Composite
Thermosoft plastic melts when heated,thermosetting polymer do not melt when heated.True or false?
True
False
