2ESOFYQ - Reacciones químicas
Authored by Juan Luis Lechuga Crespo
Chemistry
7th Grade
NGSS covered
Used 5+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿En qué tipo de cambios la naturaleza de la sustancia NO se modifica?
Físicos
Químicos
Cambios de estado
Cambios de temperatura
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Si la naturaleza de la sustancia Si se modifica estamos ante un cambio...
Físicos
Químicos
Cambio físico-químico
Ninguna es correcta
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En una reacción química los reactivos desaparecen y se transforman en productos de naturaleza diferente.
Verdadero
Falso
Son los productos los que desaparecen.
Los reactivos nunca desaparecen.
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
¿En qué lado están los reactivos en una reacción?
A la derecha
A la izquierda
En ambos lados
En el centro
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
La reacción: 2 CO + O2 --> 2CO2
No está ajustada
Está ajustada
Es endotérmica
Es de descomposición
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
¿Cuál es el ajuste de la reacción H2 + O2 --> H2O?
H2 + 2O2 --> 2H2O
H2 + 2O2 --> H2O
2H2 + O2 -->2 H2O
2H2 + 2O2 --> 2H2O
Tags
NGSS.HS-PS1-7
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
De los siguientes fenómenos, uno no es reacción química
Fermentación
Evaporación
Oxidación
Combustión
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