
Preexamen
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Chemistry
12th Grade

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20 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
¿El equilibrio químico se tiene cuándo?
Las concentraciones de productos son mayor que la de reactivos
Las concentraciones de reactivos y productos son constantes
Las concentraciones de reactivos y productos son iguales
El cambio de las concentraciones de reactivos es mayor al cambio en las concentraciones de productos
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La primera ley de la termodinámica puede expresarse mediante la ecuación
A) Q=W+ΔU
B) Q=U+ΔT
C= W= Q - U
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
¿Cuál de estos factores no afecta el equilibrio?
Tiempo
Temperatura
Presión
Catalizadores
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El flujo de calor se realiza desde un objeto caliente hacia uno frío.
Verdadero
Falso
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Segun la Ley de Boyle :
La Presion es Constante
El Volumen es Constante
La Temperatura es Constante
Ninguno
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Es la reacción que ocurre en un solo sentido
Irreversible
Reversible
Endotérmica
Exotérmica
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
La constante de equilibrio esta afectada por:
Solo la temperatura
Por presión, temperatura y tiempo
Por presión, temperatura y concentraciones
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