
segundo retro
Authored by ALONSO BELLO
Chemistry
1st - 2nd Grade
Used 2+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
No es materia
Aire
agua
tiempo
reloj
sodio
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿CUÁL DE LOS SIGUIENTES COMPUESTOS ES BINARIO?
H2CO3
Ca(OH)2
CO2
CaCO3
CH3COOH
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
PROCESO POR EL CUAL UNA SUSTANCIA SÓLIDA SE TRANSFORMA DIRECTAMENTE EN GAS, POR EFECTO DEL CALOR
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Es o son proceso(s) químico(s).
La respiración aeróbica que convierte el oxigeno (O2) en dióxido de carbono (CO2)
La fotosíntesis
Evaporación de la etilamina
Convertir la madera en aserien
Lanzamiento de una piedra
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
El elemento con número atómico 11 y número de masa 23, está formado …………..neutrones.
6.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
En cierto átomo neutro el número de neutrones es 5 unidades más que el número de electrones. Si el número de masa es 63, determina el número atómico.
7.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
Hallar el numero de protones :
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