
Conocimientos previos Química 2
Authored by Irma Flores Larios
Chemistry
8th Grade
Used 4+ times

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7 questions
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1.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Selecciona aquellos elementos que consideres deben
tenerse en cuenta para representar una reacción química
en forma de ecuación química:
Reactivos
Catalizadores
Signos para identificar el proceso
Estados de agregación
Coeficientes para balancear la ecuación
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál de las siguientes reacciones es de descomposición?
CaCO3 → CaO + CO2
HCl + Zn → ZnCl2 + H2
H2SO4 + NaOH → NaSO4 + H2O
Fe + O2 → Fe2O3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Son reacciones químicas:
1.Evaporación del agua de mar
2.Fusión del hielo de agua
3.Combustión del gas propano
4.Fermentación de la glucosa
1 y 2
1 y 3
2 y 3
3 y 4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál de los hechos no representa un cambio químico?
Fermentación del azúcar
Destilación del petróleo
Combustión del propano
Descomposición de los alimentos
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál es una reacción de simple desplazamiento?
Mg + O2 → MgO
CaCO3 → CaO + CO2
Fe + HCl → FeCl3 + H2
H2SO4 + NaOH → NaSO4 + H2O
6.
OPEN ENDED QUESTION
3 mins • Ungraded
Coloca el nombre del siguiente compuesto:
CaO
Evaluate responses using AI:
OFF
7.
OPEN ENDED QUESTION
30 sec • Ungraded
Escribe la fórmula del siguiente compuesto:
Sulfato de calcio
Evaluate responses using AI:
OFF
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