METALS UNIT 3

METALS UNIT 3

1. what are metals?

   • The majority elements in the periodic table are metals
   • They are found as minerals in their natural state

2. Types of metals

   • COOPER
   • IRON
   • SILVER
   • MERCURY
   • GOLD
   • LEAD
   • TIN

3. obtaining metals

   • UDERGROUND MINES
   • MINING AND METALLURGY
   • OPEN-PIT MINES

4. Metal working tools

   • drilling tools
   • cutting tools
   • filing tools

5. Enviorment problems

   • it alters the soil structure
   • mining spoils the landscape
   • blasting produces dus and smoke pollution
   • sound polluion
   • some metals are toxic

6. properties of metals

   • metals are very dense
   • they are good heat and electricity conductors
   • they reflect lights
   • are solid at room temperaturs except mercury
   • the most are greay or whitish colour
   • they can be mixed with other metals