Reacții chimice.Formule chimice
8th Grade
•38 Qs
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Reacții chimice.Formule chimice
Quiz
•
Chemistry
•
8th Grade
•
Hard
Standards-aligned
DIANA PRIHOANCA
Used 2+ times
FREE Resource
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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