Nanoparticles

• What is an environmental concern related to nanoparticles?

  They could potentially damage the environment
• What is the main topic of the video discussed in the study material?

  The uses and risks of nanoparticles
• What is a key feature of nanoparticles related to their size?

  They have a very large surface area to volume ratio
• What is one use of silver nanoparticles?

  To provide antibacterial properties
• What is the field of science that studies nanoparticles called?

  Nanoscience
• What is a suggested precaution regarding products containing nanoparticles?

  They should be regulated and clearly labeled
• Why can't we see nanoparticles with a light microscope?

  Because they are smaller than $0.000000001$ meters
• What is a key feature of nanoparticles regarding their surface area and volume ratio?

  They have a very large surface area to volume ratio
• What are the uses of nanoparticles?

  • Catalysts in chemical reactions
  • Drug delivery in nano medicine
  • Tiny electrical circuits for computer chips
  • Antibacterial properties in surgical masks and dressings
• Why does the surface area to volume ratio increase as particles get smaller?

  Because volume decreases more rapidly than surface area
• How can silver nanoparticles be used in medical applications?

  They can be infused into surgical masks and wound dressings
• What are fullerenes made of?

  Carbon atoms
• What are the risks associated with nanotechnology?

  • Effects on human health are not fully understood
  • Potential for nanoparticles to enter the body
  • Environmental impact is uncertain
  • Need for regulation and labeling
• What are nanoparticles?

  Really tiny particles with a diameter between one nanometer and 100 nanometers
• Why are nanoparticles exciting for electrical circuits?

  Some can conduct electricity, enabling tiny computer chips
• What is the field of science that studies nanoparticles called?

  Nanoscience
• Why can't nanoparticles be seen with a light microscope?

  Because they are smaller than $0.000000001\text{ m}$
• What is a potential risk of nanoparticles in sunscreen?

  They may enter the body and cause damage
• What are fullerenes made of?

  Carbon atoms
• What are fullerenes made of?

  Carbon atoms
• What happens to nanoparticles when they are washed into the sea?

  Their environmental impact is not fully known
• What is the hope for using fullerenes in drug delivery?

  They could easily deliver drugs directly to cells
• How does the surface area of nanoparticles benefit their use as catalysts?

  More exposed surface area speeds up chemical reactions
• How does the surface area of nanoparticles benefit their use as catalysts?

  More exposed surface area speeds up chemical reactions
• What is one application of nanoparticles in medicine?

  Delivering drugs directly to cells
• How are silver nanoparticles used in healthcare?

  For their antibacterial properties in surgical masks and dressings
• How does the use of nanoparticles in technology compare to traditional materials?

  Nanoparticles can offer enhanced properties due to their size