REACTIE DE COMBINARE
Quiz
•
Chemistry
•
8th Grade
•
Practice Problem
•
Hard
+3
Standards-aligned
alina budau
Used 25+ times
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13 questions
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1.
MULTIPLE CHOICE QUESTION
45 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
Tags
NGSS.HS-PS1-1
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Alege un singur răspuns corect! Este o reacție de combinare:
3.
MULTIPLE CHOICE QUESTION
45 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
45 sec • 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
1 min • 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
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
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Ca, element situat in grupa a II-a, pe care-l gasit si in oasele noastre, arde cu o flacara portocalie. In urma arderii se obtine:
CaO
Ca2O
CaO2
Ca2O2
Tags
NGSS.HS-PS1-1
NGSS.HS-PS1-2
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