
Guía Segundo Trimestre
Authored by Dayana Dueñez
Chemistry
1st - 10th Grade
Used 3+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Representa el número de protones que tiene un elemento.
Valencia
Número atómico
Familia
Masa atómica
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Un enlace químico es la ____________________con que se atraen los átomos de una molécula.
magnitud
fórmula
molécula
fuerza
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El aluminio tiene un modelo de Lewis como el que se muestra en la imagen, por lo cual puede decirse que tiene una valencia de:
8
3
2
7
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Los productos de la ecuación que está en la imagen son:
CO2 + 2H2O
CH4 + 2O2
2O2
CO2 + CH4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Las reacciones __________absorben energía.
endotérmicas
hipodérmicas
exotérmicas
isotérmicas
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Romper un vidrio en diferentes trozos, indica un cambio:
Físico
Químico
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El cloruro reacciona con el sodio y forman la Sal común, esto indica que es un cambio:
Químico
Físico
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