CHEMISTRY DEPARTMENT WAID ACADEMY Standard Grade Topic 13.
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Transcript of CHEMISTRY DEPARTMENT WAID ACADEMY Standard Grade Topic 13.
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CHEMISTRY DEPARTMENT
WAID ACADEMY
Standard Grade
Topic 13
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Most plastics are made from chemicals obtained from
1. Coal.
2. Plant material.
3. Natural gas.
4. Crude oil.
Coal
.
Pla
nt mat
eria
l.
Nat
ural g
as.
Cru
de oil.
0% 0%0%0%
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If a material is described as being biodegradable it can be 2525
bro
ken d
own by
bact..
.
softe
ned b
y hea
ting.
dis
pose
d of b
y bu
rnin
g.
eas
ily m
ould
ed in
to d
i...
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1. broken down by bacteria in the soil and rot away.
2. softened by heating.
3. disposed of by burning.
4. easily moulded into different shapes.
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The toxic gas formed when PVC is burned is
1. hydrogen cyanide.
2. sulphur dioxide.
3. hydrogen chloride.
4. carbon dioxide.
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hyd
rogen
cya
nide.
sulp
hur dio
xide
.
hyd
rogen
chl
orid
e.
car
bon dio
xide.
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A thermoplastic is a plastic material which
1. burns without producing toxic fumes.
2. can be broken down by bacteria in the soil.
3. can be reshaped on heating.
4. does not soften on heating.
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burn
s w
ithout p
rodu...
can
be
broke
n down ..
can
be
resh
aped
on
...
does
not s
often
on h
e...
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Electrical plugs and sockets are made from plastics which are
1. thermosetting plastics.
2. thermoplastic plastics.
3. biodegradable plastics.
4. made from PVC.
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ther
mose
tting p
last
ics.
ther
mopl
astic
pla
stic
s.
bio
degra
dable
pla
stic
s.
mad
e fro
m P
VC.
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Plastics are made up of long chain molecules called
1. monomers
2. polymers
3. residues
4. fractions.
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mon
omer
s
poly
mer
s
resi
dues
frac
tions.
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The process of joining many small molecules together to make a plastic is called.
1. Recycling.
2. Incineration.
3. Monomerisation.
4. Polymerisation.
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Rec
yclin
g.
Inci
nerat
ion.
Mono
mer
isat
ion.
Poly
mer
isat
ion.
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The small molecules which are joined together to make plastics are called
1. Plastimers.
2. Monomers.
3. Elastomers.
4. Polymers.
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Pla
stim
ers.
Mono
mer
s.
Ela
stom
ers.
Poly
mer
s.
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Which monomer is used to make the polymer chain shown below?
1. A
2. B
3. C
4. D.
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What would be formed when three of this monomer are joined?
1. A
2. B
3. C
4. D.
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