Summary
Samenvatting NOVA Scheikunde 4 VWO Hoofdstuk 1 Chemisch rekenen
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Samenvatting NOVA Scheikunde Hoofdstuk 1 4 VWO Chemisch rekenen
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this actually mainly explained a list of terms, not necessarily a summary
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1.1 Atoombouw en periodiek systeemGeschiedenis van modelvorming
Thomson: ontdekte elektronen
Rutherford: ontdekte opbouw uit een positieve kern en daaromheen een negatief geladen
elektronen wolk
Bohr: voegde elektronenschillen toe aan het model
Chadwick maakte onderscheid tussen protonen en neutronen in de kern
Atoom bestaat uit
• Atoomkern met protonen (positief) en neutronen (geen lading)
• Elektronenwolk met elektronen (negatief)
• K-schil: max. 2 elektronen
• L-schil: max. 8 elektronen
• M-schil: max. 18 elektronen
Massa (u) Lading (e) Plaats
Proton 1,0 +1 (positief) In de kern
Neutron 1,0 Geen (neutraal) In de kern
Elektron 0,00055 -1 (negatief) Rond de kern
(Dus heel klein)
Atomaire massa eenheid = 1u = 1/12e deel van een 12
6𝐶 : atoom
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