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Authored by Viorica Bludaru
Chemistry
Professional Development
Used 95+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
valența oxigenului este...
VIII
VI
IV
II
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
valențele posibile ale carbonului sînt ...
VI
IV
II
I
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Oxidul de sulf IV are formula...
SO
SO2
SO3
SO4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
În compuși cu hidrogenul nemetalele iau valența...
maximă
minimă
alte valențe posibile
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Valență constantă au ...
metalele din s/grupele principale
metalele din s/grupele secundare
nemetalele din s/grupele principale
nemetalele din s/grupele secundare
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
În compusul CO2 valența carbonului este.....
I
II
III
IV
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
În compusul H2O este legătură...
covalentă polară
covalentă nepolară
ionică
metalică
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