Kemi Flashcards

1
Q

Grundämne

A

Ämne som innehåller samma slags atomer

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2
Q

Kemiska föreningar

A

Ämne som innehåller olika slags atomer

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3
Q

Masstal

A

Antal protoner och neutroner

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4
Q

Atomnummer

A

Antal protoner

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5
Q

Protoner

A

Positiv laddning i atomkärnan

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6
Q

Neutroner

A

Håller kärnan (ingen laddning)

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7
Q

Elektroner

A

Negativ laddning i elektron skal

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8
Q

Atomkärnan

A

Kärna som består av protoner och neutroner

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9
Q

Elemenpartiklar

A

Små partiklar som bygger upp atomer

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10
Q

Period

A

Vågrätt rad i periodiska systemet där atomerna har samma antal elektronskal

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11
Q

Grupp

A

Lodrätt rad i periodiska systemet där atomerna har samma antal valenselektroner

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12
Q

Alkalimetaller

A

Metaller i grupp 1 med 1 valenselektron
(ex: kalium, natrium och litium)

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13
Q

Halogener

A

Atomer i grupp 17 med 7 valenselektroner

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14
Q

Ädelgaser

A

Atomer i grupp 18
fulla elektronskal
inte reagerar bildar/kemiska förenignar med andra ämnen

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15
Q

Periodiska systemet

A

En tabell av alla grundämnen och deras atomnummer ordnar ordningen

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