
Reações de combustão
Authored by Professor Prof
Chemistry
8th Grade
Used 105+ times

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13 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
As reações de combustão são:
reações que ocorrem entre o combustível e o comburente.
reaçoes que produzem um comburente.
reações que produzem um combustível.
reações entre o ar e o comburente.
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Na combustão do carbono podemos afirmar que:
o combustível é o dioxigénio é o comburente é o carbono.
o combustível é o carbono e o comburente é o dioxigénio.
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
O magnésio reage com o dioxigénio originando óxido de magnésio. Seleciona a opção que representa a reação química.
Mg + O —> MgO
Mg + O2 —> MgO
2Mg + O2 —> 2MgO
Mg + 2O2 —> 2MgO
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
As combustões podem ser:
vivas, lentas e fortes.
vivas, rápidas e explosivas.
vivas, lentas e explosivas.
lentas e explosivas.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Todas as combustões têm de formar chama.
Verdadeiro
Falso
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
O comburente é...
todo o material que arde.
todo o material que faz arder.
um produto da combustão.
um material utilizado para extinguir o fogo.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Os principais poluentes atmosféricos são:
água e dióxido de carbono.
dioxigénio e dióxido de carbono.
trióxido de enxofre e dióxido de nitrogénio.
dinitrogénio e carbono.
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