
KEMIJSKE REAKCIJE
Authored by Silvana Čubrić
Chemistry
7th - 8th Grade
Used 196+ times

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16 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
1. Što je kondenzacija?
prijelaz tvari iz tekućeg u plinovito agregacijsko stanje
prijelaz tvari iz čvrstog u plinovito agregacijsko stanje
prijelaz tvari iz plinovito u tekuće agregacijsko stanje
prijelaz tvari iz tekućeg u čvrsto agregacijsko stanje
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2.Koja od navedenih tvari pri sobnoj temperaturi neće sublimirati?
čvrsti ugljikov dioksid
kuhinjska sol
jod
naftalen
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
3.Koja promjena opisuje taljenje željeza?
željezo(s)→željezo(l)
željezo(g)→željezo(l)
željezo(l)→željezo(s)
željezo(s)→željezo(g)
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
4.Što se događa s ledom kad ga zagrijavamo u čaši?
kondenzira se
otapa se
tali se
isparuje
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5.Što je talište?
temperatura pri kojoj tvar prelazi iz tekućeg u plinovito stanje
temperatura pri kojoj tvar prelazi iz čvrstog u plinovito stanje
temperatura pri kojoj tvar prelazi iz tekućeg u čvrsto stanje
temperatura pri kojoj tvar prelazi iz čvrstog u tekuće stanje
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
6.Koja je od navedenih promjena kemijska promjena tvari?
gužvanje papira
rezanje papira
gorenje papira
savijanje papira
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
7.Koja je od navedenih promjena egzotermna?
stanično disanje
taljenje
isparavanje
fotosinteza
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