Druskos_9 klasė
Interactive Video
•
Chemistry
•
9th Grade
•
Hard
Miglė Parachnevičienė
Used 1+ times
FREE Resource
17 questions
Show all answers
1.
SLIDE QUESTION
30 sec • Ungraded
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kas sudaro druskas?
Metalas ir deguonis
Vanduo ir druskos
Rūgštis ir bazė
Metalo jonas ir rūgšties liekana
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kokia yra valgomosios druskos formulė?
KCl
MgCl2
CaCl2
NaCl
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Koks yra druskų formulių sudarymo principas?
Teigiamų ir neigiamų jonų krūvių suma turi būti lygi nuliui
Visos druskos turi būti tirpios
Druskos visada turi būti baltos
Teigiami jonai susijungę su neigiamais jonais
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kokiu tikslu naudojama valgomoji druska maisto pramonėje?
Konservavimas
Transportavimas
Gamyba
Pakuotė
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kokia yra kalcio karbonato formulė?
H2CO3
CaCO3
Ca(OH)2
CaO
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kuri medžiaga yra druska?
HCl
NaCl
NaOH
BaO
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