
EXAMEN "ATOMO"
Authored by BEATRIZ CRUZ
Chemistry
3rd Grade
Used 4+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Si un átomo de un elemento químico neutro tiene 16 protones, ¿Cuántos electrones tendrá?
4
8
12
16
2.
FILL IN THE BLANK QUESTION
20 sec • 1 pt
El átomo está compuesto por partículas con carga positiva que se encuentran en el núcleo
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El elemento berilio presenta un número atómico de 4 ¿cuál de las siguientes representaciones del modelo de Lewis describe a este elemento?
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
El Sodio presenta un número atómico de 11 y una masa atómica de 23. Elige la opción que presente el número de partículas subatómicas para este elemento.
e-=11, p+= 23 n°=11
e-=11, p+=11, n°= 23
e-= 11, p+= 11 n°= 12
e-= 11, p+= 12 n°= 11
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
¿En cuál de los siguientes casos se muestra a un átomo con un número de oxidación de -2?
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Nombre del elemento químico que presenta el símbolo "S"
Selenio
Azufre
Sodio
Silicio
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
El agua (H2O), el cloruro de sodio (NaCl) y el azúcar (C12H22O11), son ejemplos de:
Compuestos químicos
Mezclas
Soluciones
Elementos químicos
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