C2.3.5 Nanoparticles

• The surface area to volume ratio of nanoparticles is high
• What is one example of a unique electrical property of nanoparticles?

  Higher conductivity
• Match the application with the property of nanoparticles:

  Sunscreen lotions ↔️ High reactivity

  Fuel cells ↔️ Quantum effects

  Drug delivery ↔️ High surface area
• Quantum effects are minimal in larger particles.


  True
• The key properties of nanoparticles include their high surface area to volume ratio, high reactivity, and quantum effects
• Quantum effects in nanoparticles affect their optical and electronic properties.


  True
• Nanoparticles in medicine are used for targeted drug delivery to reduce side effects.
• High strength and durability of nanoparticles in materials science lead to efficient processes.
• The toxicity of nanoparticles is a concern due to their high surface area and reactivity.
• Exposure to nanoparticles can occur through inhalation or absorption through the skin.
• What is the defining characteristic of a nanoparticle?

  Dimension less than 100 nm
• Nanoparticles have a lower reactivity compared to larger particles.

  False
• The high surface area to volume ratio of nanoparticles leads to better catalysis
• What is the surface area to volume ratio of larger particles compared to nanoparticles?

  Lower
• High reactivity of nanoparticles makes them effective in targeted drug delivery
• Nanoparticles have a lower surface area to volume ratio compared to larger particles.

  False
• The high surface area to volume ratio of nanoparticles leads to increased chemical reactions and better catalysis
• Match the application of nanoparticles with its property:

  Sunscreen lotions ↔️ High reactivity

  Fuel cells ↔️ Quantum effects

  Targeted drug delivery ↔️ High surface area to volume ratio
• Quantum effects in nanoparticles improve the conductivity of semiconductors in electronics.

  True
• Match the example of nanoparticle application with its field:

  Drug delivery to cancer cells ↔️ Medicine

  Faster transistors ↔️ Electronics

  Self-cleaning surfaces ↔️ Materials Science
• Steps to ensure the safe use of nanoparticles

  1️⃣ Careful testing of toxicity

  2️⃣ Monitoring environmental release

  3️⃣ Developing protective equipment

  4️⃣ Designing biodegradable nanoparticles
• The unique properties of nanoparticles require careful risk assessment and safety protocols.