C2 - Nanoparticles

• What is the size of nanoparticles?

  • Diameter between 1-100 nanometres
  • Contain only a few hundred atoms
• What is the range for the diameter of fine particles?

  Between 1 x 10^-7m and 2.5 x 10^-6m
• What is the range for the diameter of coarse particles?

  Between 1 x 10^-5m and 2.5 x 10^-6m
• Risks of nanoparticles?

  Possible that they can be absorbed into our body and enter our cells
• Uses of nanoparticles?

  • Medicines
  • Sunscreens
  • Deodorants
• What amount of quantities are needed to be effective?

  Smaller quantities are needed to be effective compared to materials with normal particles sizes
• Nanoparticles have a high...

  surface area to volume ratio