Mohun ujoodha metals and their ores form 3

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Mohun ujoodha metals and their ores form 3

  1. 1. METALS AND THEIR ORES Name: Mohundranathsingh UJOODHA School: Bon Accueil State College, Mauritius Age group: Form 3, 14yrs Subject: Chemistry Email: bkvish75@yahoo.com
  2. 2. At the end of this lesson, you will be able to:- (i) list the different metals and their ores (ii) match the metals with their uses (iii)predict the method of extraction of different metals (iv)describe the importance of recycling metals Learning Outcomes:
  3. 3. Let us check your prior knowledge. Match the following metals with their appearance Aluminium Silver GoldMercury Iron
  4. 4. METALS AND THEIR ORES In some places, the mineral deposits in rock contain a high concentration of one metal. These metal deposits are called ores. An ore is a mineral deposit that can be mined and refined at profit.
  5. 5. HOW METALS ARE EXTRACTED? METAL ORE METHOD OF EXTRACTION ALUMINIUM BAUXITE ELECTROLYSIS IRON HAEMATITE BLAST FURNACE COPPER MALACHITE ROASTING IN AIR
  6. 6. Which metal is extracted from the metal ore shown below ? Sodium Aluminium Copper Silver
  7. 7. EXTRACTION OF COPPER FROM MALACHITE Why produce copper? It's hard to imagine a world without copper. We rely on copper for power, lighting, heating, communications, water supply and transport. Copper makes our homes, schools and businesses efficient, comfortable and decorative and it lasts for many years. Every year, the world demand for copper is about 15 million tonnes. The main ores of copper are: •Chalcopyrite •Bornite •Malachite Over 50% of the World's copper comes from chalcopyrite and bornite.
  8. 8. BRAIN TEASER Circle the ore of Aluminium(Bauxite) in red, Zinc(Sphalerite) in black, Iron(Haematite) in blue, Gold nuggets in yellow
  9. 9. Let us discover the answers METAL ORE Aluminium Bauxite Zinc Sphalerite Iron Haematite Gold Gold nuggets
  10. 10. DISCOVERY OF METALS
  11. 11. Which of the following barchart on the abundance of metals in the Earth crust is TRUE? 7 4 0.0045 0 10 Percentage in earth crust Aluminium Iron Copper 3 1 6 0 10 Percentage in earth crust Gold Tin Iron 10 12 5 0 20 Percentage in earth crust Aluminium Iron Gold
  12. 12. Which of the following list of metals shows the correct trend in price (most expensive first)? Gold, Iron, Aluminum Aluminium, Iron, Gold Gold, Aluminium, Iron Copper, Gold, Iron
  13. 13. Construction of a metal extraction plant There are several factors that need to be considered before the construction of a metal extraction plant namely:- • availability of raw materials • ease of access • bulk transport facilities • electrical supply • proximity of residential areas • environment-friendly resources
  14. 14. Complete the following diagram to show where you would construct an Aluminium extraction plant. Discuss your idea with your classmates.
  15. 15. Recycling metals • saves resources (e.g. metal ores) • creates less waste (e.g. mining waste) • saves energy resources • reduces air pollution
  16. 16. Yes No Can aluminium cans be recycled to produce sheets or bars?
  17. 17. EVALUATION AND REINFORCEMENT The additional worksheets are meant to reinforce understanding of basic concepts in the chapter of METALS.
  18. 18. Complete the following Concept map – Team up Metals Aluminium Physical properties Zinc Symbol Use Iron Reacts with acid to form Copper uses …………………. ………………….Bronze/Brass Bronze/Brass
  19. 19. Circle the objects which are made up of (i) Aluminium in red (ii) Iron in blue (iii) Copper in green Spitfire Fighter plane Ring Austin Ruby Sword Fridge Electric wires

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