Kemijske promjene i svojstva tvari

Quiz
•
Chemistry
•
8th Grade
•
Hard
Karlo Vorih
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
kemijska jednažba ima
kvalitativno značenje
kvantitativno značenje
kvalitativno i kvantitativno značenje
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Izbaci uljeza. Glavni čimbenici koji utječu na brzinu kemijske reakcije jesu
temperatura
površina čvrstih tvari
katalizatori i inhibitori
svijetlost
koncentracija reaktanata
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Enzimi su biološki katalizatori.
točno
netočno
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Inhibitori su tvari koji ubrzavaju kemijske reakcije
točno
netočno
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Katalizatori su tvari koji ubrzavaju kemijske reakcije.
točno
netočno
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Elementarni sumpor pojavljuje se u jednom kristalnom obliku
točno
netočno
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Spojevi metala i sumpora nazivaju se sulfidi.
točno
netočno
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