
Test plàstics
Authored by hector C
Instructional Technology
11th Grade
Used 10+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En quines 3 grans categories es poden classificar els plàstics?
elàstics, termoplàstics i termoestables
temoelàstics, elastoplàstics i termoestables
termoplàstics, elastòmers i termoestablics
elastòmers, termoestables i termoplàstics
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
els termoestables es caracteritzen per...
fer-se blans quan es calfen i es pot fer indefinidament
una estructura lineal amb enllaços molt dèbils
cadenes unides lateralment i plegades que poden estirar-se o acurtar-se
cadenes enllaçades fòrtament en distintes direccions
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
es caracteritzen per una gran elasticitat i adherència...
termoplàstics
elastòmers
termoestables
reciclables
4.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Quins polímers són reciclables?
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Quan els apliquem calor, es tornen rígids i només poden calfar-se una vegada...
termoestables
elastòmers
termoplàstics
cap
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A quin plàstic corresponen les sigles: HDPE
polipropilé de baixa densitat
polietilé d'alta densitat
poliestiré d'alta densitat
polivinil de baixa densitat
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Quines són les aplicacions del LDPE?
dipòsits d'aigua
canonades
bosses
joguines
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