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Nanoscience Chemistry 1 GCSE ScienceChapter 6. What is a nanoparticle? One million nanoparticles placed side by side would span 1mm. GCSE ScienceChapter.

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Presentation on theme: "Nanoscience Chemistry 1 GCSE ScienceChapter 6. What is a nanoparticle? One million nanoparticles placed side by side would span 1mm. GCSE ScienceChapter."— Presentation transcript:

1 Nanoscience Chemistry 1 GCSE ScienceChapter 6

2 What is a nanoparticle? One million nanoparticles placed side by side would span 1mm. GCSE ScienceChapter 6

3 Macro….. Billion light years 93 The universe telescope GCSE ScienceChapter 6

4 Macro….. thousand light years 100 The milky way (our galaxy) telescope GCSE ScienceChapter 6

5 Macro….. thousand km 13 The Earth (our Planet) telescope GCSE ScienceChapter 6

6 Macro….. km 320 Wales telescope GCSE ScienceChapter 6

7 Macro….. metre 150 Millennium Stadium telescope GCSE ScienceChapter 6

8 Macro….. metre 2 Person Eye GCSE ScienceChapter 6

9 Macro….. cm 20 Science textbook Eye GCSE ScienceChapter 6

10 Macro….. cm 2 Your finger Eye GCSE ScienceChapter 6

11 Macro….. mm 1 Pencil point Eye GCSE ScienceChapter 6

12 Micro….. micrometer 300 Flea microscope GCSE ScienceChapter 6

13 Micro….. micrometer 40 Human hair microscope GCSE ScienceChapter 6

14 Micro….. micrometer 20 One blood cell microscope GCSE ScienceChapter 6

15 Micro….. micrometer 4 One Bacterium E-coli microscope GCSE ScienceChapter 6

16 Nano….. nanometre 400 One Flu Virus (Influenza) Electron microscope GCSE ScienceChapter 6

17 Nano….. nanometre 40 Molecule of protein Electron microscope GCSE ScienceChapter 6

18 Nano….. nanometre 1 Molecule of Carbon 60 Electron microscope GCSE ScienceChapter 6

19 Properties of Nanoparticles The properties of substances change entirely when in nano-sized form. silver e.g. Silver (macro) Silver is a ductile and malleable metal (slightly harder than gold). Its white with a metallic sheen capable of high shine. It has the highest electrical conductivity of any metal, even copper, and so is used to coat high quality electrodes/ electronic connections. Pure silver also has the highest heat conductivity of all metals (diamond is the only non-metal thats higher). Because it reflects well, its used as a background for mirrors. Silver salts react to light, and silver nitrate is used in photographic film. GCSE ScienceChapter 6

20 Properties of Nanoparticles The properties of substances change entirely when in nano-sized form. Silver (nano) Silver in this form shows different properties: 1)Its antibacterial 2)Its antiviral 3)Its antifungal In each of the above examples, the silver nanoparticles prevent the organisms respiratory enzymes from working, and so kills them in minutes. Special socks are now available that include silver nanoparticles in order to heal conditions such as athletes foot. Research has shown that silver can also be used to treat many diseases, from flu to HIV. GCSE ScienceChapter 6

21 Using Silver Nanoparticles Coating the inside of the fridge with silver nanoparticles ensures that any microbe is killed and keeps the fridge clean hygienic and safe. Nanoparticles in the washing machine ensure that the clothes are cleaned and disinfected. The silver nanoparticles in this sock kills odour causing bacteria and keep the socks fresh! GCSE ScienceChapter 6

22 Advantages and disadvantages of using nanoparticles Nanoparticles Advantages Disadvantages Preparation of certain catalysts Unusual properties, leading to new uses Some have antibacterial, antiviral and antifungal properties Could penetrate skin and cause undesired side-effects Easily released into the environment There is a lot that we dont know about nanoparticles at the moment. Much more research is needed before their use becomes widespread GCSE ScienceChapter 6


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