
Olimpiadas química
Authored by Juan parodi
Chemistry
1st - 12th Grade
Used 14+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El BF3...
Posee una geometría molecular tetraédrica
Posee una geometría electrónica planotriangular
Cumple con la regla del octeto
Es un compuesto iónico
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Si hablamos de Cu2SO4 Nos referimos a:
Sulfato cúprico
Sulfito cúprico
Sulfito cuproso
Sulfato cuproso
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál de estos posee mayor energía de enlace?
BF3
CaCO3
NH3
CCl4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Si a una solución determinada se la calienta, de modo que se alcanza el punto de ebullición del solvente...
La solución se concentra
La solución se diluye
No sucede nada
En teoría deben evaporarse tanto soluto como solvente
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuantos átomos de hidrógeno hay en un mol de H2?
6,022x10^23
12,044x10^23
2
Ninguna es correcta
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Señale la/s opción/es correcta/s para una molécula de H2O
Posee geometría molecular angular
Posee geometría electrónica tetraédrica
Forma puentes de hidrógeno
Es una molécular polar
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Para que una mezcla sea una solución (marque la/s correcta/s) (ST=soluto SV=solvence SC=solución)
Debe ser homogénea (una sola fase visible)
Las fuerzas ST-SV deben vencer las fuerzas ST-ST y SV-SV
La cantidad de soluto debe ser mayor al punto de saturación del sistema
El soluto y el solvente deben ser distintos en cuanto a polaridad (un st polar y sv no polar por ejemplo)
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