Learning Intention Understand methods of extracting metal from

Task 1 • Watch this video on metal extraction and answer the questions on

Task 1 1. What is the most common metal in the Earth’s crust? 2.

Task 2 • Read the information on the following slides. • Can you order

Unreactive metals such as Silver can be removed just by heating. The molten metal

Some metals (e. g. iron) are bound more tightly to other elements. We need

The best example this method is the use of the blast furnace. First used

Iron ore and carbon are emptied into the top of the furnace Inside, a

Some metal elements are more than others. These elements form very stable compounds with

. The metal ore is melted an electrical current is passed through it. The

Task 3 Questions 1. Why do most metals need to be extracted and not

Task 4 • Read this page on metal extraction. • https: //www. bbc. co.

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Learning Intention Understand methods of extracting metal from ores.

Task 1 • Watch this video on metal extraction and answer the questions on the next slide. • https: //www. youtube. com/watch? v=8 Pk hb. Kw 1 o. Ec • Then read the information on the following slides.

Task 1 1. What is the most common metal in the Earth’s crust? 2. What more reactive metal did the French chemist use to extract aluminium? 3. How much iron is mined each year in Britain? 4. What elements are in iron oxide? 5. What do they add to iron ore to extract iron? 6. How hot is the blast furnace? 7. What is the waste product called? 8. Why does the blast furnace not work for aluminium? 9. What is electrolysis? 10. What is the current used to extract aluminium?

Task 2 • Read the information on the following slides. • Can you order the metals in order of reactivity and match this to how they are extracted from their ore?

Unreactive metals such as Silver can be removed just by heating. The molten metal can be separated from the molten rock.

Some metals (e. g. iron) are bound more tightly to other elements. We need to add carbon to the mixture to help the chemical reaction to work.

The best example this method is the use of the blast furnace. First used in China about 500 years BC. Many old blast furnaces can still be found in Scotland

Iron ore and carbon are emptied into the top of the furnace Inside, a chemical reaction occurs, freeing the iron from its ore. Molten iron is collected at the bottom of the furnace.

Some metal elements are more than others. These elements form very stable compounds with very They need a lot . and a more efficient chemical reaction to extract the metal.

. The metal ore is melted an electrical current is passed through it. The metal moves to one electrode and the non metal moves to the other electrode. This is how we get metals such as aluminium.

Task 3 Questions 1. Why do most metals need to be extracted and not mined? 2. Can you describe the 3 different methods used to extract metals from their ores? 3. Can you explain why extraction of metals is important. 4. Can you explain the wider impact of metal extraction.

Task 4 • Read this page on metal extraction. • https: //www. bbc. co. uk/bitesize/guides/ zv 4 g 4 qt/revision/3 • What are 3 problems with metal extraction?