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Formule chimice și radicali

Authored by Adriana AMAZILITEI

Chemistry

7th Grade

Used 4+ times

Formule chimice și radicali
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9 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Sunt molecule:

O2, CuO, HBr, H2O

H2, HCl, NH3, CH4

Na2O, FeO, HgO, CaO

AgNO3, CuSO4

2.

MULTIPLE CHOICE QUESTION

30 sec • Ungraded

Valența la metale este egală cu:

nr. grupei

8 - nr. grupei

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Sifonul are formula:

KOH

NaCl

H2CO3

NH3

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Fomula chimică cu 12 atomi de oxigen este:

Ca3(PO4)3

Mg2(PO3)3

3NaNO3

3H2CO3

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Soda caustică are formula:

SiO2

NaOH

S(OH)2

SO2

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Formula chimică cu 6 atomi de hidrogen:

2H3PO4

2HNO3

2NaHCO3

2NH4Cl

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Este radical monovalent:

NO3

SO4

SO3

PO4

PO3

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