OKSIDI NEMETALA vježba

OKSIDI NEMETALA vježba

12th Grade

15 Qs

quiz-placeholder

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OKSIDI NEMETALA vježba

OKSIDI NEMETALA vježba

Assessment

Quiz

Chemistry

12th Grade

Practice Problem

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Created by

Violet L.

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15 questions

Show all answers

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

Media Image

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

Media Image

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

Media Image

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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