
Anglis.Silicis
Authored by Aurelija Berantaite
Chemistry
10th Grade
Used 39+ times

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33 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Kiek valentinių elektronų turi silicio atomas?
5
6
2
4
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Kuri iš užrašytų formulių yra silicio rūgšties molekulinė formulė?
H2SO6
H2SiO3
HSiO4
H2CO3
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kuri reakcijos lygtis teisingai aprašo anglies rūgšties jonizacijos(susidarymo)procesą?
H2O + CO <----> H2CO2
H2O + CO2 ----> H2CO3
H2O + CO2 <----> H2CO3
H2O + SO2 <----> H2SO3
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kuri reakcijos lygtis teisingai aprašo anglies(IV)oksido susidarymo procesą (anglies degimo lygtį, esant deguonies pertekliui)?
2C + O2 ----> 2CO
C + 2 O ----> CO2
O2 + C ----> CO2
O2 + 2 CO ---> 2CO2
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Koks anglies oksidacijos laipsnis anglies H2CO3 rūgštyje?
- 4
-2
+6
+4
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kuri reakcijos lygtis teisingai aprašo anglies degimo procesą, trūkstant deguonies?
2C + O2 ---> 2CO
O2 + C ----> CO2
C + O -----> CO
CO + O2 ---> CO2
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Koks silicio oksidacijos laipsnis silicio H2SiO3 rūgštyje?
-2
-3
+4
-4
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