
Syrer og baser IV under construction
Authored by Sussss San
Chemistry
9th - 12th Grade

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15 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
Hvordan fortæller Ks om syrens styre
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
hvad er en base
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3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
hvad er en base i kemi
En base er et stof, der accepterer protoner eller donerer elektronpar
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
hvad er en syre i kemi
En syre er et stof, der kun findes i flydende form.
En syre er et stof, der donerer protoner eller accepterer elektronpar
En syre er et stof, der kun kan acceptere protoner.
En syre er altid en base.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
hvordan påvirker pH-værdien en kemisk reaktion
pH-værdien kan ændre reaktionshastigheden og ligevægten
pH-værdien har ingen indflydelse på kemiske reaktioner.
pH-værdien bestemmer kun farven på reaktanterne.
pH-værdien er kun vigtig for biologiske processer.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
hvad er forskellen mellem en stærk og en svag syre
Der er ingen forskel, de er begge syre.
En stærk syre er altid farlig, mens en svag syre er sikker.
En stærk syre dissocierer fuldstændigt i vand, mens en svag syre kun delvist dissocierer
En stærk syre kan kun findes i laboratorier.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
hvordan kan man neutralisere en syre?
Ved at fortynde syren med vand.
Ved at opvarme syren.
Ved at tilsætte en base.
Ved at tilsætte mere syre.
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