Átomo n°2
Authored by Cristian Ferreira
Chemistry, Science
8th Grade
Used 4+ times
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8 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
El número de protones, neutrones y electrones constituyen datos importantes para caracterizar un átomo. Al respecto ¿cuál de las siguientes afirmaciones es correcta?
Número atómico (Z), es el número de neutrones existentes de un átomo.
Número másico (A), es la suma de electrones y neutrones existentes de un átomo.
Número atómico (Z), es el número de protones existentes de un átomo.
Número másico (A), es el número de electrones existentes de un átomo.
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Cuando un elemento químico se encuentra cargado negativamente, decimos que se trata de un:
Catión
Anión
Neutrón
Positrón
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Del ion Ca +2, podemos decir que se encuentra cargado:
Negativamente
Positivamente
No presenta carga
Es un isótopo
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
¿Cuál es el número de electrones presentes en el ion 2311Na+?
10
11
12
23
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
El número de electrones presentes en un ion X 5+ con un valor Z = 20 y A = 10
10
15
20
25
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Las siguientes especies químicas 63Li ; 73Li , representan a un:
Isótopo
Isóbaro
Isótono
Hipertónico
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Las siguientes especies químicas 5826Fe ; 5827Ni , representan a un:
Isótopo
Isóbaro
Isótono
Isotónico
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