
Termoquímica e Cinética Química
Authored by Maria Cecília
Chemistry
11th Grade
Used 8+ times

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18 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Considere a reação abaixo e classifique-a quanto à variação de energia:
CH4 + 2O2 → CO2 + 2H2O + energia
Endotérmica, pois absorve calor.
Exotérmica, pois libera calor.
Isotérmica, pois não há variação de energia.
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Observe a seguinte equação química:
N2 + O2 + calor → 2NO
Exotérmica, pois libera calor.
Endotérmica, pois absorve calor.
Espontânea, pois ocorre sozinha.
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Quando ocorre a condensação do vapor de água, podemos dizer que esse processo:
Absorve calor do ambiente.
Libera calor para o ambiente.
Não altera a temperatura do sistema.
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Quando ocorre a fusão do gelo, podemos dizer que esse processo:
Absorve calor do ambiente.
Libera calor para o ambiente.
Não altera a temperatura do sistema.
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A evaporação é um processo:
Endotérmico
Exotérmico
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A solidificação é um processo:
Endotérmico
Exotérmico
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Observe o gráfico e responda:
Trata-se de uma reação:
Exotérmica
Endotérmica
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