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Flashcard
•
Chemistry
•
5th Grade
•
Practice Problem
•
Hard
Sándor Volosinovszki
Used 1+ times
FREE Resource
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40 questions
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1.
FLASHCARD QUESTION
Front
A katalizátorok endoterm reakciók esetén csökkentik a reakcióhőt.
Back
Hamis.
2.
FLASHCARD QUESTION
Front
Ha foszforsavat elektrolizálunk platinaelektródok között, a katódon hidrogénionok oxidálódnak.
Back
Hamis.
3.
FLASHCARD QUESTION
Front
A kén oldhatósága vízben kisebb, mint a jód oldhatósága vízben.
Back
Igaz.
4.
FLASHCARD QUESTION
Front
A hidrogénatomok száma a metilénklorid molekulájában megegyezik a hidrogénatomok számával a kloroform molekulaiban.
Back
Hamis.
5.
FLASHCARD QUESTION
Front
Mely anyagok vezetik az elektromos áramot?
A vasgálic olvadéka.
A kén olvadéka.
A cseppfolyós ammónia.
A kvarc kristálya.
A grafit.
A higany.
A polietilén.
A szárazjég.
Back
- A vasgálic olvadéka - A cseppfolyós ammónia - A grafit - A higany
6.
FLASHCARD QUESTION
Front
Miért vezeti a higany az elektromos áramot?
Back
Mert fém, és a fémek jó vezetők.
7.
FLASHCARD QUESTION
Front
A katalizátorok felgyorsítják a reakciókat anélkül, hogy megváltoznának.
Back
Igaz.
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