
QUÍMICA EXAMEN PRIMER TRIMESTRE
Authored by NADIA POLET GUIM LOZANO
Chemistry
9th Grade
Used 5+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 2 pts
¿Quién es el creador de la tabla periódica moderna?
A) Antoine Lavoisier
B) Dmitri Mendeléyev
C) John Dalton
D) Marie Curie
2.
MULTIPLE CHOICE QUESTION
5 mins • 2 pts
¿Qué cantidad de átomos hay en un mol de helio?
3.
MULTIPLE CHOICE QUESTION
5 mins • 2 pts
¿Qué representa el número de Avogadro en química?
A) La masa atómica de un elemento en gramos
B) El número de átomos, moléculas o partículas en un mol de una sustancia
C) La cantidad de energía liberada en una reacción química
D) La temperatura a la que ocurre la ebullición de un líquido
4.
MULTIPLE CHOICE QUESTION
5 mins • 2 pts
¿Cómo están organizados los elementos en la tabla periódica?
A) Por su masa atómica creciente
B) Por sus números cuánticos
C) Por sus números de neutrones
D) Por sus símbolos químicos
5.
MULTIPLE CHOICE QUESTION
5 mins • 2 pts
¿Cuántos elementos hay en la tabla periódica actualmente?
A) 108
B) 118
C) 126
D) 130
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