
Opakování chemie 8
Authored by Miroslava Matusova
Chemistry
8th Grade
Used 19+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Označ správný vzorec pro kyselinu chloristou.
HCl
HClO
HClO4
HClO7
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Která z uvedených směsí je emulze?
olej a voda
voda a písek
mýdlová pěna
písek a dřevěné hobliny
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jakou metodou oddělím písek od vody?
sublimací
krystalizací
destilací
filtrací
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kterou částici neobsahuje atom?
proton
molekula
elektron
neutron
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kolik atomů obsahuje molekula H2O?
1
2
3
4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kolik prvků je zastoupeno v molekule HNO3?
2
3
4
5
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jaký je hmotnostní zlomek soli v roztoku, který vznikl smícháním 95 gramů vody a 5 gramů soli?
0,5
0,1
0,05
0,01
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