Form 3 Science Chapter 6 Land and resources

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Form 3 Science Chapter 6 Land and resources

  1. 1. CHAPTER 6 LAND AND RESOURCES
  2. 2. METAL OXIDATION
  3. 3. OXIDATION OF METAL Metal + Oxygen → Metal Oxide Iron + Oxygen → Aluminium + Oxygen → Zinc + Oxygen → Magnesium + Oxygen →
  4. 4.  Potassium, sodium, lithium, calcium and magnesium react with oxygen and burn in air.
  5. 5. METALS THAT DO NOTUNDERGO OXIDATION
  6. 6. REACTIVITY SERIES OF METALSMagnesium >> Aluminium >> Zinc >> Iron >>Copper>> Gold >> Silver
  7. 7. MAGNESIUM +OXYGEN → MAGNESIUM OXIDE
  8. 8. ZINC + OXYGEN → ZINC OXIDE
  9. 9. Which is the correct word equation for the reaction when copper is heated strongly in air? copper + air → copper carbonate copper + water → copper oxide copper + oxygen → copper oxide
  10. 10. METAL + SULPHUR → METAL SULPHIDE  Iron + Sulphur →  Aluminium + Sulphur →  Zinc + Sulphur →  Magnesium + Sulphur →
  11. 11. COMPARISON BETWEENELEMENTS AND COMPOUNDS
  12. 12. COMPARE SODIUM, CHLORINE ANDSODIUM CHLORIDE
  13. 13. ABUNDANCE OF SILICONCOMPOUNDS
  14. 14. CLASSIFICATION OF SILICONCOMPOUNDS Silicon compounds Silica Silicates (Silicon Dioxide) (Silicon + Oxygen + Metal)Quartz Flint Sand Clay Asbestos Gemstones Mica
  15. 15. QUARTZ
  16. 16. SAND
  17. 17. FLINT
  18. 18. CLAY
  19. 19. ASBESTOS
  20. 20. GEMSTONES
  21. 21. MICA
  22. 22. USES OF FIBRE GLASSES
  23. 23. CLAY – KAOLIN
  24. 24. NATURALSILICATES
  25. 25. CHARACTERISTICS OFSILICON COMPOUNDS Stable – Not reactive  Do not dissolve in water (except sodium silicate)  Do not react with acids  Do not change shape / form when heated Only acidic silica dissolve in alkalis to form silicates

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