Sistemul periodic al elementelor
Authored by Constantin Ichim
Chemistry
7th Grade
Used 324+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Un metal este ...
clor
sulf
fosfor
calciu
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Un gaz rar este
argon
argint
arseniu
aramă
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Simbolul sodiului este ..
So
S
Na
N
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Valența hidrogenului este ....
III
II
I
IV
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Atomul 126C are în nucleu ....
6 e, 6p
6p, 6n
6e, 6n
6 nucleoni
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Potasiul este simbolizat ...
Po
P
Pt
K
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Un element din grupa II A are valența
IV
II
III
I
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