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Samenvatting hoofdstuk 13 NOVA scheikunde

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overzichtelijk en de belangrijkste kern van de informatie.

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Secondary school
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Course
School year
6

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Hoofdstuk 13
Uploaded on
January 3, 2024
Number of pages
3
Written in
2022/2023
Type
Summary

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Scheikunde samenvatting hoofdstuk 13
13.1 analyse en onderzoek
Kwalitatieve analyse: bepalen welke stoffen in mengsel
Kwantitatieve analyse: bepalen hoeveelheid/ concentratie in mengsel


Scheidingsmethode (op verschil in stofeigenschappen) :
 Destileren/ indampen: verschil in kookpunt
 Bezinken/ centrifugeren: verschil in dichtheid stoffen
 Filtreren: verschil in deeltjes grootte
 Extraheren/wassen: verschil in oplosbaarheid
 Adsorberen: verschil in aanhechtingsvermogen




Reagens:
Specifieke, zichtbare reactie toont stof aan.
Voorbeelden reagens -> aangetoonde stof
-joodwater: zetmeel
-kalkwater: Co2
-wit kopersulfaat: water


Variabele onderzoeksexperiment:
- Onafhankelijk: grootheid variert (PH)
- Afhankelijk: hetgeen dat je meet variërt (reactietijd)
- Controle: factorn die constant blijven (volume, temperatuur, concentratie”)


Aantoningsreacties:
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