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download-2 Apple Iphone download-1 : (Materials (Circuit board (Battery…

- - - - When they got aluminosilicate (the result of glass) then they put it into molten salt bath where chemical occurs
        
        Molten salt
        
        Potassium ions
        
        Potassium ions are infused into the glass
        
        Compressive stress- when materials are compressed to make them smaller in volume
        
        Sodium ions
        
        At the same when potassium ions are infused into the glass, sodium ions exit the glass.
  - - - Cobalt- a metal found and mined in DR Congo, China, Russia, Canada and Australia #
      - Lead- mined in Australia, USA, China and Canada #
      - Graphene- a one-atom thick layer of graphite. Graphite is mined mostly in China, Canada and Brazil #
        
        Mining industry
      - Wire
        
        Most wires are made from copper, which is a metal mined mainly in Chile, Peru, Mexico and Indonesia
      - Provides the voltage to the circuit #
    - - control the electric current as it passes through them. They’re colour coded to determine their value.
    - - Amplifies charge.
    - - Stores charge and stops and change in current.
    - - These are components which can harbour electrical charge.
    - - Allows current to pass in one direction only, blocking the other.
    - - Can either allow current or block depending if they are closed or open.
  - - - Mining Industry- Sapphire is mined in deposits mostly in Sri Lanka, China, Eastern Australia, Vietnam and India
        
        Mining has a negative impact on the environment.
        It can cause issues such as destruction of land to make space for the mining, which can cause loss of habitats to animals. Another thing that this can cause is soil erosion.
        
        A positive social impact of the mining industry is that it creates job opportunities for people
        
        The more people employed and in the workforce, the more money made to contribute to the economy (economic growth)
        
        Sapphire mining is a primary industry, since it involves extracting raw materials from the earth.
- - - - 1:Addiction
      - 2:Texting while driving
      - 3: Education performance
      - 4:Cyber bullying
      - Isolation
      - Depression and increased bullying