
Formule chimice
Authored by Iuliana Cozma
Chemistry
2nd Grade
Used 153+ times

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18 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Formula chimică a acidului sulfhidric este:
H2SO4
H2S
H2SO3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se numeşte carbonat de potasiu
MgCO3
K2CO3
KCO3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Referitor la substanţa compusă formată între oxigen şi aluminiu este corectă afirmaţia:
se formează un oxid care conţine în total 5 atomi
se formează o substanţă compusă care conţine 3 atomi de aluminiu
se formează o substanţă compusă care conţine 2 atomi de oxigen
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Următorul şir de substanţe conţin numai acizi:
NaOH, Ca(OH)2, NH3
HNO2, HBr, HCl
O2, Cl2, N2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Formula chimică a amoniacului este:
NH3
CH4
CO
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Denumirea tehnică a carbonatului de calciu este:
sodă de rufe;
var nestins;
calcar.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Este substanţă diatomică
CO
NO2
H2O
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