Metals

• A displacement reaction is when a more reactive metal replaces a less reactive metal.
• A redox reaction is where oxidation and reduction both occur (in terms of oxygen).
• Reactivity is how readily / violently a substance reacts.
• A life cycle assessment is the effect on the environment obtaining raw materials, manufacturing and the use and disposal of the product.
• Disadvanages of Recycling Metals:

  • Expensive to collect, transport and sort
  • Requires more energy
• Advantages of Recycling Metals:

  • Natural reserves last longer
  • Decreased demand for mining
  • Less pollution
  • Less energy needed
  • Less waste material goes to landfill