
Radioaktivitet 1
Authored by Tomas Fridstrom
Physics
7th - 9th Grade
Used 3+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Vad är en isotop?
Fast, flytande eller gas
En version av ett grundämne
Något som inte leder elström
En karta
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Två isotoper av ett visst grundämne har...
Samma antal neutroner
Samma antal molekyler
Samma DNA
Samma antal protoner
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Den ovanliga isotopen kol-14 bildas...
i solens inre
i växter
i atmosfärens översta lager
bara på hösten
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Den vanligaste isotopen av kol har detta namn
Kol-12
Kol-13
Kol-14
Kol-15
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Kol-12 heter så eftersom den ...
Upptäcktes 1912
Har 12 elektronskal
Har 12 partiklar i kärnan
Har 12 valenselektroner
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Kol-14 är inte stabil, den sönderfaller. Tiden det tar för hälften av atomerna att sönderfalla kallas...
Halveringstid
Gandalf-tid
50-procentingarna
Einstein-tid
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Halveringstiden för kol-14 är...
inte relevant
25%
5730 år
50 000 år
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