
Preguntas de Química
Authored by ERIK CONDORI ILACHOQUE
Chemistry
University
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Cuál de las siguientes opciones representa un cambio químico?
Fusión del hielo
Evaporación del agua
Combustión de la madera
Disolución de sal en agua
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Qué tipo de enlace se forma entre un metal y un no metal?
Covalente no polar
Covalente polar
Iónico
Metálico
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Cuál es la fórmula química del ácido sulfúrico?
HNO₃
HCl
H₂SO₄
H₂CO₃
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Qué nombre recibe el compuesto Ca(OH)₂?
Hidróxido de sodio
Hidróxido de aluminio
Hidróxido de calcio
Óxido de calcio
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Cuál es la masa molar del agua (H₂O)?
18 g/mol
16 g/mol
20 g/mol
10 g/mol
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Qué representa el número atómico de un elemento?
La masa del núcleo
El número de protones
El número de neutrones
La cantidad de enlaces
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Qué tipo de sustancia es el oxígeno molecular (O₂)?
Compuesto iónico
Mezcla heterogénea
Molécula diatómica
Ácido fuerte
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