H1 Flashcards

1
Q

Atoomnummer

A

aantal protonen in de kern

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2
Q

Isotopen

A

atomen met hetzelfde aantal protonen, maar verschillend aantal neutronen

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3
Q

Massagetal

A

som aantal protonen en neutronen (linksboven)

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4
Q

Relatieve atoommassa A

A

gewogen gemiddelde van atoommassa’s van verschillende isotopen

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5
Q

Valantie-elektronen

A

elektronen in de buitenste schil die eigenschappen bepalen

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6
Q

Elektronenconfiguratie

A

verdeling elektronen over de schillen

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7
Q

Edelgassen

A

groep 18, reageren nauwelijks of niet met andere stoffen

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8
Q

Edelgasconfiguratie

A

2 of 8 elektronen in de buitenste schil

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9
Q

Halogenen

A

groep 17, gemakkelijk reageren met metalen en nemen elektronen op (wordt edelgasconfiguratie)

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10
Q

Alkalimetalen

A

groep 1, reageren heftig met water en halogenen. Geven elektronen af voor edelgasconfiguratie

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11
Q

Aardalkalimetalen

A

groep 2, edelgasconfiguratie als 2 elektronen afstaan

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12
Q

Synthetische elementen

A

elementen met atoomnummer groter dan 92

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13
Q

Constante van Avogadro

A

6,02 * 10²³

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14
Q

Telwaarden

A

hele getallen

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15
Q

Meetwaarden

A

gemiddelden van meerdere metingen

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16
Q

Ondermaat

A

de beginstof die als eerste op is

17
Q

Overmaat

A

de beginstof waarvan nog stof overblijft