
Formule chimice și radicali
Authored by Adriana AMAZILITEI
Chemistry
7th Grade
Used 4+ times

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9 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sunt molecule:
O2, CuO, HBr, H2O
H2, HCl, NH3, CH4
Na2O, FeO, HgO, CaO
AgNO3, CuSO4
2.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
Valența la metale este egală cu:
nr. grupei
8 - nr. grupei
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sifonul are formula:
KOH
NaCl
H2CO3
NH3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Fomula chimică cu 12 atomi de oxigen este:
Ca3(PO4)3
Mg2(PO3)3
3NaNO3
3H2CO3
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Soda caustică are formula:
SiO2
NaOH
S(OH)2
SO2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Formula chimică cu 6 atomi de hidrogen:
2H3PO4
2HNO3
2NaHCO3
2NH4Cl
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Este radical monovalent:
NO3
SO4
SO3
PO4
PO3
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