
Quiz: Materiale Metalice
Authored by Marius undefined
Science
7th Grade
Used 2+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce este un aliaj?
Un metal pur
O combinație de două sau mai multe metale
Un material nemetalic
Un tip de ceramică
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Care dintre următoarele este un aliaj de fier și carbon?
Aluminiu
Bronz
Oțel
Cupru
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce proprietate caracterizează în general metalele?
Fragilitate
Conductivitate electrică bună
Lipsa ductilității
Izolație termică
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce metal este cunoscut pentru greutatea sa mică și rezistența la coroziune?
Plumb
Fier
Titan
Zinc
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce rol are carbonul în oțeluri?
Reduce duritatea
Crește rezistența și duritatea
Scade temperatura de topire
Îmbunătățește conductivitatea
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bronzul este un aliaj între:
Aluminiu și cupru
Cupru și staniu
Fier și nichel
Zinc și aluminiu
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce înseamnă tratamentul termic al metalelor?
Curățarea suprafeței metalului
Încălzirea și răcirea controlată pentru a modifica proprietățile
Încălzirea pentru topire
Vopsirea metalului
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