T3-METALS

T3-METALS

1. Obtaining metals.

   • Mining

2. Environmental problems.

   • 1.Mining spoils the landscape 2.It alters the soil structure 3.Blasting 4.Explosions produce sound pollution 5.Some metals are toxic

3. Types of metals.

   • 1.Tungstenn 2.Molybdenum 3.Niobium 4.Vanadium 5.Chronium 6.Platinum 7.Titanium 8.Iron 9.Cobalt 10.Nickel 11.Manganese 12.Copper 13.Gold 14.Silver 15.Aluminium 16.Magnesium 17.Zinc 18.Lead 19.Tin 20.Mercury

4. What are metals?

   • Chemical elements which are well conductors of heat and electricity

5. Properties of metals.

   • 1.Castability 2.Weldability 3.Ductility 4.Malleability 5.Foldability 6.Machinability

6. Metal working tools

   • Drilling tools
   • Filing tools