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metals
This document discusses metals and their properties. It defines metals as good conductors of heat and electricity that are malleable and ductile. It lists common metals like aluminum, copper, iron, and titanium. It also discusses non-metals and their differences from metals like lower melting points and being poor conductors. Finally, it outlines some common uses of metals like in jewelry, pans, and cables due to their conductive properties and outlines uses of non-metals like insulation.
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metals
- 1. EN. BADWIN SHAHBIN ZAWAWI MEOR SYUKRI BIN MEOR ARIS (2012281884) MOHD ZARAHAN BIN ZAKARIA (2012237574) HANIS RIDZHA MINARWAN BIN AHMAD ZUKI (2012808042) SITI ZALIKHA BINTI MOHD JAMIL (2012831838) AKMA SUHAILA BINTI MD NOOR (2012823774) NURUL ATIQAH BINTI ZAINOL (2012625514) MOHAMAD ALIFF FADZUAN BIN AHMAD ZUKI (201285084) SITI NUR SAKINAH BINTI SAEDON (2012821744)
- 2. From Greek word: •Metallon = ‘ mine,quarry,metal’ Element,compound,alloy – good conductor Shiny,malleable and ductile METAL
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- 5. aluminium antimony bronze cobaltcopper gold iron lead
- 6. lithium megnesium mercury nickelplatinum silver titanium zinc
- 7. METALS : calcium :copper : lead : aluminium : zinc : lithium : potassium COMMON METAL AND NON-METAL
- 8. NON - METAL: sulphur : oxygen : chlorine : hydrogen : bromine : nitrogen : idelium
- 9. Metal -Strong -Malleable and ductile -Highmelting and boiling points -Good conductor of heat -Shiny when polish -React with oxygen to form basic oxides CHARACTERISTIC
- 10. Non-Metal -React with oxygento form acidic oxides -Dull sound when hit with hammer -Low melting and boiling point -Poor condustors of electricity -Dull looking -Low density
- 11. Ferrous • From Latinword = ‘Contain iron’ • Use in large quantity • Include pure iron • Wrought iron • Alloy ( steel ) • Magnetic • Non-magnetic is stainless steels Non-ferrous • Non-magnetic • Cobalt and nickel are exceptions CATEGORIES OF METAL
- 12. Base Metal • zinc, •Reacting with an acid • Use to refer to a metal • Oxidizes or Corrodes relatively easily • React variably with • Dilute hydrochloric acid ( HCI ) to form Hydrogen • Example : iron,nickel,lead
- 13. Noble Metal • Resistanceto corrosion or oxidation • Perceived rarity • Examples : • Gold • Platinium • Silver • Rhodium
- 14. Precious Metal • Raremelallic chemical element of high economic value • Less reactive • High important as currency • Is a Gold and Silver • Include platinium group metal: • Ruthenuim,Rhodium,Palladium,Osmium,Iridium.
- 15. Iron • Used forstrength application • Wrought iron contain • less then 0.2% carbon • Cast iron between 2-4% carbon • Iron with a carbon content between 0.2-2% is classified as steel. Iron
- 16. Examples of Iron CookingpanTraditional equipments
- 17. Aluminium • Is aalloy • Easy to form • Readily available • Inexpensive • Recyclable Aluminium
- 18. Examples of Aluminium LaptopDrinking Can Laptop’sCover
- 19. Copper • Have anumber of properties that make them useful • Include : • High electrical • Thermal conductivity • High ductility • Good corrosion resistance Copper
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- 21. Titanium • Alloy • Strengthin higher temperature ( ~1000’ F ) application • When component weight is a concern Titanium
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- 23. Nickel • Alloy • Usefor higher temperature ( ~1500-2000’ F ). • When good corrosion resistance is required. Nickel
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- 25. METAL - Made intojewellery due to their hard and shiny appearance -Used to make pans due to good conductor of heat -Malleable,ductile and good conductor of electricity and used in electrical cables USES OF METAL AND NON-METAL
- 26. NON – METAL -Usedas insulating material around wire cables since they do not conduct electricity -Used to make pans handles as they are poor of conductors of heat