
Test de Evaluare Finală - Clasa a IX-a

Quiz
•
Chemistry
•
9th Grade
•
Hard
Manuela Dumitriu
FREE Resource
19 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suma dintre numărul de protoni și numărul de.....................din nucleul atomic se numește număr de masă.
electroni
neutroni
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Protonul este particulă componentă a nucleului atomic cu sarcină electrică.......................
(+1)
(0)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
În învelișul de electroni,al treilea strat electronic are un substrat cu trei orbitali p,notat cu....................
(3p)
(2p)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Într-un ion negativ,numărul protonilor din nucleul atomic este mai.....................decât numărul electronilor din învelișul electronic.
mic
mare
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ionii pozitivi se obțin din atomi prin.....................de electroni.
cedare
acceptare
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
În stare....................cristalele de NaCl nu conduc curentul electric.
solidă
lichidă
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In molecula acidului clorhidric legăturile covalente H-Cl sunt....................
polare
nepolare
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