
Compuși ionici și moleculari
Authored by Liliana Alina Onete
Chemistry
2nd Grade
Used 9+ times

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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Formează ioni negativi:
Mg, O, Al
Na, Cl, K
O, Cl, S
Answer explanation
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sunt metale:
K, Al, Ca
F, Mg, O
Na, Cl, S
Answer explanation
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
ionii pozitivi se formează prin:
acceptare de electroni
punere în comun de electroni
cedare de electroni
Answer explanation
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pentru a ajunge la structură stabilă, atomul de magneziu
acceptă doi electroni
cedează doi electroni
este stabil, deci nu acceptă, respectiv nu cedează electroni
Answer explanation
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Moleculele se formează prin:
cedare de electroni
acceptare de electroni
punere în comun de electroni
Answer explanation
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ionul de Na este izoelectronic cu
atomul de argon
atomul de neon
ionul de neon
Answer explanation
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La temperatura obișnuită, compușii moleculari sunt în stare de agregare:
solidă și lichidă
solidă
solidă, lichidă și gazoază
Answer explanation
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