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Test

8th Grade

9 Qs

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Chemistry

8th Grade

Practice Problem

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Brinza Veronica

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9 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Acizii au în componenta lor:

Un atom de hidrogen si un radical acid

Un atom de hidrogen si mai mulți radicali acizi

Unul sau mai mulți atomi de hidrogen si un radical acid

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Radicalul acid este atomul sau grupul de atomi proveniți din molecula :

Acidului

Bazei

Sării

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Acizii se clasifica în acizi monobazici, dibazici și tribazici, după :

Tărie

Nr atomilor de hidrogen substituiti

Compoziție

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

HCl, HBr, H2S sunt :

Hidracizi

Oxiacizi

Anhidride acide

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

HNO2 se numește :

Acid azotic

Acid azotos

Acid azothidric

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Sulfit acid se scrie :

HSO4

HSO2

HSO3

H2SO4

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Denumirea hidracizilor se face adăugând la "oxid" + numele nemetalului :

Sufixul "-hidric"

Sufixul "-ic"

Sufixul "-os"

8.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Care dintre următorii acizi sunt tari :

Acid acetic, acid azotic, acid sulfuric

Acid sulfuric, acid sulfuros, acid sulfhidric

Acid sulfuric, acid azotic, acid clorhidric

Acid clorhidric, acid fosforic, acid azotic

9.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

HCl, HBr, H2S sunt :

Hidracizi

Oxiacizi

Anhidride acide