C1 Metals
- Created by: Charlie.watsonn
- Created on: 09-01-17 16:51
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- C1- Metals
- Extracting iron
- Blast Furnace
- Iron ore, Coke and Limestone are fed up into the top of the furnace.
- Molten Iron and **** is collected at the bottom.
- As hot air is blown into the furnace, the coke burns in oxygen to produce Carbon Monoxide.
- The Carbon Monoxide then reduces the iron oxide to Iron and carbon dioxide.
- The limestone reacts with impurities to create **** which floats on the top of the molten Iron.
- Blast Furnace
- Oxidation - A reaction when oxygen is added to a substance.
- Reduction - A reaction when oxygen is removed from a substance.
- Atoms and Alloys
- Metal atoms are arranged in giant structures, regular rows and layers.
- Metals can bend because the layers ca slide over each other. The shape can change but atoms remain bonded.
- Metals conduct electricity due to free electrons as free outer electrons can move through the layers.
- To make metals harder they can be mixed to form alloys.
- An alloy is not a compound it is a mixture of elements.
- Smart alloys can remember their original shape and will return if heated.
- Iron and Steel
- Pure Iron is too soft for most uses so steel is used instead.
- Adding metals to molten steel can give it special properties.
- Stainless steel is very resistant to corrosion and does not rust.
- Atoms is pure metals have different structures. If different atoms are added to create an alloy. The layers will become harder to pass over each other making the metal harder.
- Copper
- Purified through electrolysis.
- Electricity is passes through a copper sulphate solution.
- Pure copper, positive, travel to the cathode and coat it.
- The impurities will lose electrons and will dissolve in the solution.
- Impurities will fall to the bottom
- Anode= Postive Cathode= negative
- Purified through electrolysis.
- Extracting iron
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