
L'estat d'oxidació. Albert Fuster Prohens.
Authored by Albert Fuster
Chemistry
6th - 8th Grade
Used 1+ times

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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La formula química que ens dona la proporció d'àtoms que formen una substància pura és...
la formula molar
la forma molecular
la formula empírica
la formula reticular
2.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Quants d'àtoms formen una molècula de CO2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Els metalls tendeixen a cedir electrons, per tant, quina serà la seva carrega neta?
neutre, 0.
positiva
negativa
neutre, +1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Els enllaços químics es forment a partir dels...
protons del núcli
electrons del núcli
electrons de les orbites més internes
electrons de les orbites més externes.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Què ens permet saber el nombre d'oxidació?
El nombre d'electrons de cada àtom i si aquests tendeixen a ser cedits o captats.
El nombre de protons de cada àtom i si aquests tendeixen a ser cedits o captats.
El pes de cada àtom.
Com d'energètic és cada àtom.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En el cas de la sal (NaCl), el clor ha captat un electró del sodi, que l'ha cedit. Quina serà el nombre d'oxidació del clor?
-1
+1
0
-2
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
En els enllaços covalents, un dels àtoms atreu més els electrons que els altres. En el cas de l'aigua (H2O) , l`oxigen atreu més als electrons que l'hidrògen. Cada hidrogen comparteix només 1 electro. Quina serà la carrega de l'oxigen?
+1
-1
+2
-2
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