Fierul
9th Grade
•6 Qs
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Fierul
Quiz
•
Chemistry
•
9th Grade
•
Practice Problem
•
Hard
Stela Burcovschi
Used 5+ times
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6 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
45 sec • 3 pts
Selectează caracteristicile fierului conform poziției în Tabelul Periodic
Gupa a IV-a, subgrupa secundară
Perioada a IV-a
Masa atomică 56
Are repartizarea electronilor
2e 8e 8e 2e
Manifestă valența II sau III
2.
MULTIPLE SELECT QUESTION
45 sec • 3 pts
Sunt minereuri ce conțin fier
Hematită
Magnetită
Calcar
Pirită
Bauxită
3.
MULTIPLE SELECT QUESTION
45 sec • 3 pts
Fierul poate fi obținut din Fe2O3 prin reducere cu...
Cu
H2
C
Al
4.
MULTIPLE SELECT QUESTION
45 sec • 2 pts
Sunt aliaje ale fierului...
Fonta
Duraluminiul
Oțelul
Bronzul
5.
MULTIPLE SELECT QUESTION
45 sec • 2 pts
Marchează afirmațiile adevărate cu privire la fier.
Este element vital.
Se conține în sângele uman.
Se conține în oase și dinți.
Contribuie la digestie.
6.
MULTIPLE SELECT QUESTION
45 sec • 4 pts
Sunt proprietăți fizice ale fierului.
Ușor
Greu
Greu fuzibil
Conduce curentul electric
Posedă luciu metalic
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