
Periodiska systemet och joner
Authored by Ola Vitalisson
Chemistry
9th Grade
Used 5+ times

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18 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Vad kallas de lodräta kolumnerna i ett periodiskt system?
Perioder
Grupper
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Vad kallas de horisontella raderna i det periodiska systemet?
Perioder
Grupper
Ädelgaser
Halogener
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Vad stämmer för alkalimetallerna?
De finns i grupp 1
De reagerar oftast lika
De finns i grupp 7 (17)
De har alla lika många elektronskal
De har alla 1 valenselektron.
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Vad stämmer om grundämnen näst längst till höger i grupp 7 (17)?
Alla saknar en elektron för att det ska bli fullt i yttersta elektronskalet
De bildar positiva joner
De är metaller
De är giftiga gaser
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Vilka joner bildar grundämnen i grupp 2?
1+
2+
1-
2-
De bildar inte joner
Answer explanation
Alla grundämnen i grupp 2 har två valenselektroner som de vill ge bort. Här visas lösningen till magnesium som finns i grupp 2.
Magnesium har 12 st elektroner fördelade K=2, L=8, M=2. De 2 valenselektronerna i M-skalet vill de ge bort. I atomkärnan finns 12 st positivt laddade protoner. Tar vi bort valenseletronerna så finns det 12p+ men bara 10e-, vi har alltså 2+ mer än minus och jonladdningen blir Mg2+
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Vilka joner bildar halogenerna i grupp 7 (17)
1+
2+
1-
2-
De bildar inte joner
7.
DRAW QUESTION
2 mins • 1 pt
Ringa in de ämnen som aldrig reagerar med andra ämnen, dvs ädelgaserna.
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