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Test de Evaluare Oxizi

Authored by Daniela Damo

Chemistry

8th Grade

Test de Evaluare Oxizi
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20 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

Subliniaţi cu o linie oxizii acizi şi cu două linii oxizii bazici: K2O, P2O5, ZnO, NO2, MgO, CO, Cu2O, SO2, HgO.

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

Obţineţi oxidul de magneziu prin 2 metode.

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3.

OPEN ENDED QUESTION

3 mins • 1 pt

Ce proprietăţi chimice au oxizii? Exemplificaţi.

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4.

OPEN ENDED QUESTION

3 mins • 1 pt

Identificaţi substanţele chimice a, b, d, e, f din următoarea schemă de reacţii: a → CaO + b; b + NaOH → Na2CO3 + H2O; CaO + d → CaCl2 + H2O; CaO + H2O → e; b + H2O → f.

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5.

OPEN ENDED QUESTION

3 mins • 1 pt

Precizaţi care sunt proprietăţile fizice ale oxizilor.

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6.

OPEN ENDED QUESTION

3 mins • 1 pt

Denumiţi următorii oxizi: SO3, Cr2O3, N2O5, CaO, CO2, Na2O.

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7.

OPEN ENDED QUESTION

3 mins • 1 pt

Clasificaţi oxizii din ex. anterior după criteriile cunoscute.

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