Reactii chimice
8th Grade
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Reactii chimice
Quiz
•
Chemistry
•
8th Grade
•
Practice Problem
•
Medium
Standards-aligned
MIHAELA RUS
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18 questions
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1.
MULTIPLE SELECT QUESTION
10 sec • 1 pt
selectati acizii
NaOH
HCl
HNO3
KOH
2.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
Reactia chimica reprezinta:
Fenomenul chimic prin care una sau mai multe substanțe se transformă în alte substanțe cu compoziție și proprietăți noi
Fenomenul fizic prin care una sau mai multe substanțe se transformă în alte substanțe cu compoziție și proprietăți noi
Fenomenul chimic prin care una sau mai multe substanțe se transformă în substanțe cu aceiasi compoziție și proprietăți
3.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Reactantii sunt :
amestecuri omogene
substantele chimice care reactioneaza
substantele chimice obtinute
4.
MULTIPLE SELECT QUESTION
10 sec • 1 pt
Intr-o reactie chimica suma maselor reactantilor comparativ cu suma maselor produsilor de reactie este:
mai mare
mai mica
egala
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Respectand Legea conservarii masei stabileste coeficientii pentru ecuatia a reactiei chimice dintre calciu si oxigen
Ca + O2 → CaO
6.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Substanțele care se obțin din reacție se numesc
reactanți
coeficienți
indici
produși de reacție
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Reacția 2H2 + O2 → 2 H2O este o reacție de ...
descompunere
combinare
substuție
schimb
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