
Atomen och det periodiska systemet - begrepp
Flashcard
•
Chemistry
•
9th Grade
•
Practice Problem
•
Hard
Linda Grenda Öhlund
FREE Resource
Student preview

20 questions
Show all answers
1.
FLASHCARD QUESTION
Front
alkalimetaller
Back
Metallerna i grupp 1 i det periodiska systemet. Har en valenselektron och bildar därför joner med en plusladdning. Väte ingår också i grupp 1 men är ingen metall.
2.
FLASHCARD QUESTION
Front
atomnummer
Back
Ämnena är sorterade i periodiska systemet i nummerordning efter antal protoner i kärnan. Är alltså lika med antalet protoner i atomens kärna.
3.
FLASHCARD QUESTION
Front
elektron
Back
Negativt laddad partikel som rör sig runt den positiva atomkärnan.
4.
FLASHCARD QUESTION
Front
grupp
Back
”Kolumn” i det periodiska systemet. Atomerna i en sådan har lika många valenselektroner.
5.
FLASHCARD QUESTION
Front
halogener
Back
Grundämnena i grupp 17. Saknar en valenselektron för att få fullt skal, och bildar därför joner med en minusladdning.
6.
FLASHCARD QUESTION
Front
isotop
Back
Varianter av ett grundämne. Antalet protoner är samma men antalet neutroner i atomkärnan är olika. Ett grundämne kan ha flera och de kan både vara stabila och radioaktiva.
7.
FLASHCARD QUESTION
Front
jonbindning
Back
Den bindning som håller samman jonerna i en jonförening.
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