Nanoparticles

• What are nanoparticles?

  Very tiny particles between 1 and 100 nanometers
• Why can't light microscopes see nanoparticles?

  Because they are smaller than $0.000000001\text{ m}$
• What is the field of science that studies nanoparticles?

  Nanoscience
• What is a key feature of nanoparticles?

  They have a large surface area to volume ratio
• Why does the surface area to volume ratio increase as particles get smaller?

  Volume decreases faster than surface area
• How does the surface area of nanoparticles benefit their use as catalysts?

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

  Delivering drugs directly to cells
• What are fullerenes made of?

  Carbon atoms
• How could nanoparticles be used in electronics?

  To create super tiny computer chips
• What property do silver nanoparticles have?

  Antibacterial properties
• How are silver nanoparticles used in surgical masks?

  Infused to kill bacteria
• What is a concern regarding the effects of nanotechnology?

  Its effects on our bodies are not fully understood
• What is a potential risk of nanoparticles in sunscreen?

  They may enter the body
• What happens to nanoparticles when washed into the sea?

  Their environmental impact is unknown
• Why do some people advocate for stricter regulation of nanoparticles?

  To ensure safety and proper labeling