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Summary Kwartaal 2 Fisies Opsomming Graad 9 $3.54   Add to cart

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Summary Kwartaal 2 Fisies Opsomming Graad 9

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Graad 9 Kwartaal2 Natuurwetenskappe Opsomming, Fisies en Chemies. Grade 9 Term 2 Science summary in Afrikaans.

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  • Kwartaal 2 eenheid 1 - 4
  • August 22, 2023
  • 8
  • 2023/2024
  • Summary
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Elemente (1ste 20)
1. H - Waterstof 11. Na - Natrium
2. He - Helium 12. Mg - Magnesium
3. Li - Litium 13. Al - Aluminium
4. Be - Berillium 14. Si - Silikon
5. B - Boor 15. P - Fosfor
6. C - Koolstof 16. S - Swawel
7. N - Stikstof 17. Cl - Chloor
8. O - Suurstof 18. Ar - Argon
9. F - Fluoor 19. K - Kalium
10. Ne - Neon 20. Ca - Kalsium
Massagetal = die onderste getal

3 Atoomgetal

Li Element

7 Massagetal


Diatomiese Elemente:
Hoekom is dit ‘n diatomiese element?

• Want dit bestaan uit 2 atome/molekules
1. H2

2. N2
I = Jodium
3. O2

4. F2

5. Cl2

6. Br2

7. I2


Metale, half-metaal, nie-metaal => moet kan identifiseer

, Verbindings:


• Stowwe wat uit 2 of meer elemente bestaan

• In ‘n vaste verhouding chemise aan mekaar verbind

• Kan in eenvoudiger stowwe afgebreek word

• Maak gebruik van chemiese formules om dit te illustreer Bv. NaCl (Natriumchloried)

• NaCl se verhouding is 1:1 CO2 se verhouding is 1:2

• Party verhoudings kry voorvoegsels by. Dui ook aan hoeveel atome daar is

▪ Mono = 1

▪ Di = 2

▪ Tri = 3

▪ Tetra = 4

• CO = Koolstofmonoksied

• CO2 = Koolstofdioksied

• Kry ook ‘n agtervoegsel (-ied) by laaste element Sleutel:

Swart: Koolstof
• Tipes Modelverbindings:
Blou: suurstof
▪ Balmetode

CO

CO2

▪ Stok en bal metode

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