
Metale alcaline
Authored by Nataly Sandu
Chemistry
9th Grade
Used 3+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
În șirul următor sunt doar metale:
Na, Ca, Al, Fe
Li, H2, Au, Mg
C, K, Ba, Ag
N2, Cl2, Li, Fr
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
În șirul următor metalele alcaline sunt:
Al, Ga, Zn, K
Fe, K, Ca, Ba
Li, Na, K, Fr
Na, Mg, Al, K
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
În Sistemul Periodic calciu este situat în:
grupa 3, perioada 3
grupa 2, perioada 4
grupa 1, perioada 2
grupa 2, perioada 2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Masa atomică relativă a calciului:
40 g/mol
20 g/mol
24 g/mol
11 g/mol
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sodiul și potasiul pe ultimul nivel energetic conțin:
2 electroni
5 electroni
1 electron
3 electroni
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Fenolftaleina în mediul bazic se colorează în:
albastru
verde
roz/zmeuriu
incolor
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Atomul de calciu conține:
40 electroni, 40 protoni, 40 neutroni
20 electroni, 20 protoni, 20 neutroni
11 electroni, 11 protoni, 12 neutroni
19 electroni, 19 protoni, 20 neutroni
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