tipuri de reacții chimice

tipuri de reacții chimice

7th Grade

18 Qs

quiz-placeholder

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tipuri de reacții chimice

tipuri de reacții chimice

Assessment

Quiz

Chemistry

7th Grade

Medium

Created by

Adriana AMAZILITEI

Used 7+ times

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18 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Cloratul de potasiu are formula:

KCl3

KCl

KClO4

KClO3

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Este o reacție de schimb:

CaCO3=CaO + CO2

Mg+2HCl =MgCl2+H2

2KOH+ SO3=K2SO4+ H2O

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Este o reacție de descompunere:

2Al+ Fe2O3=2Fe+ Al2O3

Ca(OH)2 =CaO+ H2O

3Fe+2O2=Fe3O4

SO2+NaOH= Na2SO3+H2O

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Reacția ”Vulcanului Chimic” este:

(NH4)2Cr2O7= Cr2O3+N2+4H2O

K2Cr2O7=Cr2O3+ K2O+3/2O2

(NH4)2Cr2O7= Cr2O3+NH3+4H2O

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Reacția de identificare a ionilor sulfat este:

NaCl+AgNO3= NaNO3+AgCl

H2SO4+ BaCl2 = BaSO4+ 2HCl

BaO+SO3=BaSO4

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Identificarea ionilor sulfat se face cu:

AgNO3

BaCl2

NaOH

turnesol

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Identificarea ionilor clorură, Cl- , se face cu:

Ca(OH)2

fenolftaleină

AgNO3

BaCl2

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