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Summary Graad 8 Natuurwetenskappe (NW) Opsommings - Kwartaal 2 (Kollig Op)

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Graad 8 Natuurwetenskappe (NW) Opsommings Kwartaal 2: Die opsommings is saamgestel deur die Kollig Op handboek se werk op te som. Opsommings is in Afrikaans met aanvullende en skriftelike notas wat deur die opsteller saam gestel is. Kwartaal 2 - Materie en materiale Module 4:  Atome Module 5:  Partikelmodel van materie Module 6:  Chemiese reaksies

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, Atome
Mengsels van elemente en verbindings
• Nukleus = die sentrale gebied van 'n atoom.
• Elemente en verbindings - suiwer stowwe wat nie fisies • Protone is positief gelaai.
geskei kan word nie. • Neutrone het geen lading nie (neutraal).
• 'n Mengsel - 2 of meer suiwer stowwe wat gemeng word. • Elektrone is negatief gelaai.
• Verbindings kan slegs chemies verdeel word. •
• 'n Mengsel is onsuiwer - die stof bevat klein hoeveelhede •
ander stowwe.
• Elemente

• Algemene elemente = waterstof (H), suurstof
(O), koolstof (C), goud (Au) en silwer (Ag).
• Elemente bestaan uit 1 soort atoom.


Sample M4: Atome •



Simbole van elemente


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• Simbole met een letter is altyd hoofletters.
• Simbole met 2 letters het 'n hoofletter eerste
en 'n kleinletter tweede.
Verbindings
• Verbindings bestaan uit ten minste 2 verskillende
elemente wat chemies gebind is.
• Verbindings is suiwer stowwe – kan in eenvoudiger
stowwe afgebreek word. Molekules van elemente
• Die atome word in vaste verhoudings gekombineer.
• Molekules –2 of meer atome wat saamgevoeg is.

• 'n Chemiese binding hou die atome bymekaar.
• Diatomiese molekules – 2 atome van dieselfde
Gebruik elektrolise om element aanmekaar gebind.
verbindings te ontbind
• Elektrolise – 'n verbinding wat met elektrisiteit
afgebreek word.


K2-M4 Kollig Op Kopiereg © www.summariessa.co.za (DO NOT COPY)
GR8 NW Breinkaart

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