TEST: TEMA 5 "Reacciones químicas"
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•
Chemistry
•
8th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
¿Qué tipo de cambio físico indica el fuego cuando la madera arde?
Back
Intercambio de energía en forma de luz y/o calor.
2.
FLASHCARD QUESTION
Front
¿Qué es la representación simbólica de una reacción química?
Back
Ecuación química.
3.
FLASHCARD QUESTION
Front
¿Qué coeficiente tiene el metano en una reacción química típica?
Back
1.
4.
FLASHCARD QUESTION
Front
¿Qué coeficiente debo colocar para balancear los Hidrógenos en la reacción Na2O + HCl ------> 2NaCl + H2O?
Back
2.
5.
FLASHCARD QUESTION
Front
¿Cómo se definen los cambios químicos?
Back
Cambia la estructura interna de la materia, se adquieren nuevas características que antes no se tenían.
6.
FLASHCARD QUESTION
Front
¿Qué es un cambio químico?
Back
Un proceso en el que se transforman las sustancias en otras diferentes.
7.
FLASHCARD QUESTION
Front
¿Qué es una reacción química?
Back
Un proceso en el que una o más sustancias se convierten en una o más sustancias diferentes.
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