REACCIONES QUÍMICAS
Authored by MARCELA JÁCOME GONZÁLEZ
Chemistry
9th - 12th Grade
Used 6+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
¿Cómo se define reacción química?
Se crean nuevas sustancias
Son cambios de estado
Son cambios físicos
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué dice la Ley de Lavoisier?
Son los cambios físicos de la materia
Existe pérdida de energía en toda reacción química
La materia se conserva
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuántos átomos de Cu existen en la siguiente fórmula?
Cu(OH)3
1
2
3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La siguiente ecuación, corresponde a:
N2 + 3H2 --> 2NH3
Descomposición
Síntesis
Doble sustitución
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Que indica el subíndice en una fórmula química?
NH3
Cantidad de moles
Cantidad de átomos
Cantidad de moléculas
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué significa el coeficiente estequiométrico?
2NH3
Cantidad de moles o moléculas
Cantidad de átomos
Cantidad de átomos de N
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué sucede en una ecuación química cuando se habla de descomposición?
Se forma un solo compuesto
Se forma más de un compuesto
Se intercambian los átomos
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