
Reazioni chimiche e legami intermolecolari
Authored by Maria Carla Ferrari
Chemistry
10th Grade
Used 24+ times

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26 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
I coefficienti stechiometrici corretti della reazione chimica
Fe + Cl2 => FeCl3
sono:
2, 3 => 2
1, 3 => 2
2, 3 => 3
3, 2 => 2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
I coefficienti stechiometrici corretti della reazione chimica:
Fe + H2O => Fe3O4 + H2
sono:
3, 4 => 1, 4
3, 2 => 1, 2
4, 3 => 4, 1
3, 2 => 1, 4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
I coefficienti stechiometrici corretti della reazione chimica:
Cl2 +H2O => HCl + HClO
sono:
1, 1 => 1, 1
1, 2 => 1, 1
1, 1 => 2, 1
1, 2 => 2, 2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In ambedue i termini di un'equazione chimica bilanciata vi è sempre lo stesso numero di:
molecole
atomi
ioni
moli
tutte le risposte sono corrette
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Come si legge la seguente reazione chimica?
4 Al + 3 O2 => 2 Al2O3
4 atomi di alluminio reagiscono con 3 molecole di ossigeno per dare 2 molecole di prodotto
4 molecole di alluminio reagiscono con 3 molecole di ossigeno per dare 2 molecole di prodotto
4 atomi di alluminio reagiscono con 3 atomi di ossigeno per dare 2 atomi di prodotto
4 atomi di alluminio reagiscono con 5 atomi di ossigeno per dare 2 molecole di prodotto
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Quale delle seguenti reazioni NON è bilanciata correttamente?
Fe2O3 + 2Al → Al2O3 + 2Fe
2H2 + O2 → 2H2O
Zn3Sb2 + 6H2O → 3Zn(OH)2 + 2 SbH3
6CO2 + 6H2O → C6H12O6 + O2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La seguente reazione MgO + 2HCl → MgCl2 + H2O è classificabile come una reazione di:
decomposizione
scambio semplice
sintesi
doppio scambio
combustione
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