OKSIDI NEMETALA vježba
Quiz
•
Chemistry
•
12th Grade
•
Practice Problem
•
Medium
Violet L.
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15 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Jedna tvrdnja o oksidima nemetala NIJE TOČNA.
Mogu biti kiseli i neutralni.
Mogu biti amfoterni i bazični.
Ako su topljivi u vodi daju kiseline.
Svi su kovalentne molekule.
2.
FILL IN THE BLANK QUESTION
45 sec • 1 pt
Od nabrojenih formula oksida jedan oksid je uljez. Zapišite ispravno formulu.
CO2, SO2, P4O6, CaO, CO, NO2
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Navedene su formule i nazivi oksida, jedan naziv uz formulu je pogrešan:
SO2- sumporov(IV) oksid
CO2- ugljikov(IV) oksid
N2O- dušikov(II) oksid
P4O10- fosforov(V) oksid
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Uz jedan oksid je navedena pogrešna formula kiseline koja nastaje otapanjem u vodi.
CO2
H2CO3
SO2
H2SO2
SO3
H2SO4
NO2
HNO3
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Što je po kemijskom sastavu puževa kućica?
CaCO3 i hitin
CaO i hitin
Ca(OH)2 i hitin
CO2 i hitin
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Žarenjem školjke nastaje?
jedna tvrdnja nije točna
bijela krhka tvar topljiva u vodi
siva čvrsta tvar netopljiva u vodi
bezbojan plin teži od zraka
CaO(s)+ CO2(g)
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Užarena školjka je stavljena u čašu s vodom. U vodu je dodan fenolftalein.
Jedna tvrdnja nije točna.
Fenolftalein poljubičasti jer je otopina kisela.
U čaši nastaje kalcijeva lužina.
Žarenjem školjke nastaje kalcijev oksid-CaO.
Kalcijev oksid reagira s vodom.
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