Nanoparticles (Edexcel GCSE Chemistry): Flashcards
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Size range of nanoparticles
Size range of nanoparticles
1-100 nanometres
1 nanometre in metres
1 nanometre in metres
metres (0.000000001 m)
Why nanoparticles have high surface area to volume ratio
Why nanoparticles have high surface area to volume ratio
As particles decrease in size, surface area becomes large compared to volume
Why nanoparticles used as catalysts
Why nanoparticles used as catalysts
Large surface area speeds up reactions
Nanoparticles use in medicine
Nanoparticles use in medicine
Drug delivery systems targeting specific areas in body
Nanoparticles advantage in sunscreens
Nanoparticles advantage in sunscreens
Better UV protection due to more even coverage
Nanoparticles advantage in clothing
Nanoparticles advantage in clothing
Antimicrobial properties reduce odour & kill bacteria
Nanoparticles advantage in construction
Nanoparticles advantage in construction
Increased strength & durability in materials
Nanoparticles use in environmental applications
Nanoparticles use in environmental applications
Water purification systems & environmental remediation
Nanoparticles advantage in food packaging
Nanoparticles advantage in food packaging
Extend shelf life by preventing bacterial growth
Health risk of nanoparticles
Health risk of nanoparticles
Pass through biological barriers (skin, blood-brain barrier)
Environmental risk of nanoparticles in waste
Environmental risk of nanoparticles in waste
Enter microorganisms, food chain, animals & plants
Use of fullerenes
Use of fullerenes
Lubricants for machinery (gears, artificial joints)
Where silver nanoparticles are used
Where silver nanoparticles are used
Surgical masks & wound dressings (in polymer fibres)
Property of silver nanoparticles
Property of silver nanoparticles
Antibacterial properties, help prevent infections