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Compoziția substanțelor

Authored by Stela Burcovschi

Chemistry

8th Grade

Used 7+ times

Compoziția substanțelor
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5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Este substanță compusă

N2N_2  

O2O_2  

CaCa  

  CaOCaO  

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Are cea mai mare masă moleculară relativă

H2H_2  

O2O_2  

N2N_2  

Cl2Cl_2  

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Valența oxigenului este...

VI

VI, IV și II

Doar II

Doar I

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Sulful are valența IV în compusul....

SO3SO_3  

SO2SO_2  

H2SH_2S  

CaSCaS  

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Fosforul are valența V în compusul...

PH3PH_3  

P2O3P_2O_3  

P2O5P_2O_5  

Ca3P2Ca_3P_2  

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