Uses Of Nanoparticles (chemistry Only) (GCSE Chemistry)

Which statement correctly links intermolecular forces and the use of nanoparticles in coatings to make water-repellent textiles?

Why are nanoparticle drug carriers (e.g., liposomes, polymer nanoparticles) chemically useful for targeted medicine?

In a catalyst application, why might nanoparticles be chemically poisoned more quickly than bulk catalysts?

Which chemical property explains why some nanoparticles are added to lubricants to reduce wear?

Which chemical factor is most important when designing nanoparticles for use in sunscreens that must be safe for skin?

A student chooses to use iron oxide nanoparticles to remove arsenic from drinking water by adsorption. Which chemical change would show the nanoparticles have become saturated and need replacement?

How does reducing particle size to the nanoscale typically affect melting point of a material?

Which explanation best describes why nanoparticles can be more effective catalysts than the same material in bulk?

Why do many nanoparticle applications depend on controlling surface chemistry (functional groups) rather than only particle size?

What is a key chemical risk associated with silver nanoparticles used in textiles and coatings?

Nanoparticles have a much larger surface area to volume ratio than the same mass of bulk material. How does this change most directly affect chemical reactivity?