What is materials? Materials can be described as substances that produce other things. The properties of the following materials shall be considered: Wood Metals\ceramics and glass Rubber Plastics WOOD Wood is a material obtained from a tree by cutting down. The process of cutting a tree down is known as felling. STRUCTURE OF A TREE. […]
PROPERTIES OF MATERIAL – WOOD, METALS, CERAMICS, GLASS, RUBBER Read More »
Metals are found mixed with earthy materials as ores. Ores are often concentrated and converted to oxides before extraction Concentration of the ore can be done by any of the following ways: washing away the earthy materials Froth- flotation (zinc ore): The ore is agitated (churned up ) with oil and water to form a
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Aluminum can be obtained as Kaolin, Al2O3.2SiO3.2H2O, cryolite. Na3AlF6, Corundum Al2O3 and mica K2O.Al2O3.6SiO2. NB: the main source of aluminum is bauxite Al2O3.2H2O Extraction Aluminum can be found in clay and rocks, but due to their high silica content, they can not be used for extraction of aluminum. The extraction of aluminum is carried out
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Metals – Ferrous and Non Ferrous 1. Metals. Exercise 1: Make a list of all the different metals that you know about. 2. Metals. Two main groups, 1.Ferrous. 2.Non-Ferrous. 3. Metals Ferrous Pure Ferrous Metals Non Ferrous Ferrous Alloys Pure Non Ferrous Metals Copper Non Ferrous Alloys Alum. Brass Bronze Solder Zinc Tin High Speed Steel Copper