Tvari - pokus 1. r
Quiz
•
Chemistry
•
9th Grade
•
Hard

Violet L.
Used 1+ times
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Koja od navedenih smjesa nije HETEROGENA?
sumpor, cink, modra galica
sumpor, cink, voda, modra galica
voda, modra galica
otopina modre galice i sumpor
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Postupak prikazan na slici se naziva:
dekantiranje
filtriranje
destilacija
prelijevanje
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jedna tvrdnja o navedenom promatranom postupku NIJE točna:
Koristi se za razdvajanje sastojaka heterogenih smjesa.
Filtrat je u tekućem agregacijskom stanju i nalazi se u Erlenmeyerovoj tikvici.
Talog zaostaje u filtrirnom papiru jer su čestice manje od pora filtrirnog papira.
Razdvajanje se temelji na veličini ćestica i velićini pora filtrirnog papira.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jedna od navedenih tvari nije elementarna tvar:
cink
sumpor
voda
vodik
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jedna od navedenih promjena je KEMIJSKA promjena:
miješanje cinka, modre galice sumpora i vode
otapanje modre galice u vodi
odlijevanje vodene otopine modre galice od taloga cinka
reakcija cinka i klorovodične kiseline
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jedna formula navedene tvari ne pripada u niz
H2
Zn
S8
H2O
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pribor korišten na slici je:
Lijevak, čaša, štapić, okrugla tikvica
Mala čaša, velika čaša,
žličica, lijevak
Erlenmeyeriva tikvica, štapić, lijevak, čaša
čaša, menzura, štapić, lijevak
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