Metals

Metals

1. How metals are obtained

   • minerals (raw material)
     • using metals to make different objects
       • Bauxite and high-voltage power lines.

2. Metals come from minerals.

   • surface mines and underground mines.
     • useful minerals
     • useless minerals
       • or gangue

3. Metallurgy:group of industries.

4. Classifying metals. two types

   • Ferrous metals. Component is iron. Non- ferrous metals. Component is not iron.

5. Properties of metals.

   • Electrical,thermal,acoustics conductors.Ductile and malleable.Tough
   • Melt,welding.Expand,contract.Magnetic.
     • Rust.Recycled,reused.Toxic.