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Scheikunde h2 (boek: Chemie)

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Hoofstuk 2: 2.1 = molecuulmodel 2.2 = mengen of reageren 2.3 = ontleding 2.4 = alleen stukje over het Blokschema! 2.5 = overmaat en ondermaat (alles behalve Volumeverhouding bij reacties van gassen!) H2.1 t/m 2.3 helemaal H2.4 alleen het stukje 'Blokschema' (bl. 47/48), de rest slaan we over.

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Scheikunde Chemische Reacties

, Molecuulmodel (modelvoorstelling van de kl
deeltjes van een stof):
- Iedere stof bestaat uit moleculen
- Iedere stof heeft zijn eigen soort moleculen
- Moleculen trekken elkaar aan -> door
2.1 molecuulmodel aantrekkingskracht
- Moleculen zijn altijd in beweging -> hoe hoge
temperatuur, hoe sneller ze bewegen
Scheikundige gebruiken tekeningen of modellen om eigenschappen van een stof toe te
te verklaren
Kijk
Macroniveau: scheikunde die je kunt waarnemen en meten aantekeningen
Microniveau: scheikunde waar wordt gekeken naar de moleculen (molecuulmodel), ka
zien
Fasen: vast, vloeibaar en gasvormig -> bij faseovergang verandert de fase
Alleen snelheid v
Absolute nulpunt: temperatuur waar moleculen niet meer bewegenmoleculen verand
0 Kelvin = -273 C K = C + 273 temperatuur
C = K - 273
Kijk figuur 2.3 op blz. 38

Mengsel scheiden op microniveau: sorteren van moleculen -> molecuulsoorten apart va

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