Reacții chimice.Formule chimice

Reacții chimice.Formule chimice

8th Grade

38 Qs

quiz-placeholder

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Reacții chimice.Formule chimice

Reacții chimice.Formule chimice

Assessment

Quiz

Chemistry

8th Grade

Practice Problem

Hard

NGSS
HS-PS1-5, MS-PS1-1, HS-PS1-7

Standards-aligned

Created by

DIANA PRIHOANCA

Used 2+ times

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38 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Substanțele care se obțin din reacție se numesc

reactanți

coeficienți

indici

produși de reacție

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Reacția 2H2 + O2 = 2 H2O este o reacție de ...

descompunere

combinare

substuție

schimb

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Formula H2SO4 corespunde unui ...

oxid

acid

bază

sare

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Dioxidul de carbon are formula

CO

CO2

CaO

CaCO3

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Substanțele care intră în reacție se numesc ...

reactanți

produși de reacție

necunoscute

valențe

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

O reacție chimică este ...

dizolvarea

condensarea

arderea

sublimarea

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Sarea de bucătărie are formula ..

NCl

NaCl

NH3

CH4

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