Reacții de combinare
Quiz
•
Chemistry
•
8th Grade
•
Hard
+1
Standards-aligned
Tunde Lakatos
Used 17+ times
FREE Resource
14 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Alege un singur răspuns corect. Se obține o sare în cazul următoarei reacții de combinare:
Al+O2
Fe+Cl2
CO2 + H2O
SO2 + O2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Alege un singur răspuns corect! Este o reacție de combinare:
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Substanțele care se obțin din reacție se numesc
reactanți
coeficienți
indici
produși de reacție
Tags
NGSS.MS-PS1-2
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Substanţele care intră într-o reacţie chimică (care reacţionează între ele) se numesc:
Produşi de reacţie
Substanţe compuse
Substanţe simple
Reactanţi
Tags
NGSS.HS-PS1-5
NGSS.HS-PS1-7
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Coeficienţii care asigură respectarea legii conservării numărului de atomi pentru pentru ecuaţia reacţiei
Al + O2 → Al2O3
sunt (în ordine):
2, 6, 2
2, 3, 2
4, 3, 2
4, 2, 3
Tags
NGSS.HS-PS1-7
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Alegeţi ecuaţia scrisă corect:
Mg + O2 → MgO
Mg + O2 → 2MgO
2Mg + O2 → 2MgO
2Mg + O2 → MgO
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Reprezentarea unei reacții chimice cu ajutorul simbolurilor și al formulelor chimice se numește:
ecuația reacției chimice
formula chimică a substanței
Tags
NGSS.MS-PS1-1
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