Nanoparticles

• What are nanoparticles?

  Very tiny particles between 1 and 100 nanometers
• Why can't we see nanoparticles with a light microscope?

  They are smaller than $0.000000001$ meters
• 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 exposed surface area speeds up reactions
• What is one application of nanoparticles in medicine?

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

  Carbon atoms
• Why are nanoparticles exciting for electrical circuits?

  Some can conduct electricity for tiny chips
• What property do silver nanoparticles have?

  Antibacterial properties
• How are silver nanoparticles used in healthcare?

  Infused into surgical masks and dressings
• What is a concern regarding the effects of nanotechnology?

  Its effects on our bodies are not fully understood
• What do some people believe about nanoparticles?

  They need stricter regulation and labeling
• How do nanoparticles in sunscreen benefit skin protection?

  They provide better coverage against UV rays
• What is uncertain about nanoparticles in sunscreen?

  Whether they can enter the body and cause harm
• What is a potential environmental concern with nanoparticles?

  They may damage the environment when washed away
• What should we do if we enjoy the video on nanoparticles?

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