
Fémek - kvíz
Authored by Anna Agh
Chemistry
11th Grade
Used 1+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
A fémrácsú anyagok...
...kristályában az atomok összes elektronja delokalizált.
...jó elektromos és hővezetők.
... valamennyien (ez azt jelenti, mind) szürkék és csillogók.
...normál állapoton mind szilárd halmazállapotúak.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A termitreakcióról igaz, hogy:
erősen exoterm reakció.
folyamata során melegítést igényel.
ekkor aluminiumot állítunk elő tiszta vas segítségével.
ekkor hidrogénnelredukálunk fémeket.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Az alkálifémek könnyűfémek, mert:
legkisebb az elektronnegativitásuk.
legkisebb az olvadáspontjuk.
periódusonként nekik a legnagyobb az atomsugaruk.
legkisebb a moláris tömegük.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Melyik fémet lehet szenes redukcióval előállítani?
Na
Ca
Mg
Fe
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
A cinkkel bevont vaslemez sérülésekor a cink ...
(elektronvándorlás történik!)
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