EXAMEN REACCIONES QUÍMICAS 3º ESO

Quiz
•
Chemistry
•
9th Grade
•
Hard
Standards-aligned
Luisa Sánchez
Used 32+ times
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
¿Cuántos átomos de oxígeno hay en el compuesto: Ba(IO4)2?
4
2
6
8
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
¿Cuál es la masa molecular del amoniano, NH3? N=14u, H=1u
17u
17g
17
16u
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
¿Qué masa tiene un mol de agua, sabiendo que su peso molecular es 18u?
18 u
18 g
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Quemar un trozo de madera es una transformación:
química
física
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Las sustancias iniciales de una reacción química son:
productos
reactivos
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
¿Se pueden cambiar los subíndices de las fórmulas en una reacción química, por ejemplo si hace falta un oxígeno en: H2 + O2 → H2O, cambiar H2O por H2O2?
Sí
No
Me he liado
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
¿En una reacción química desaparecen y aparecen otros átomos?
Sí
No
Algo pasará
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