Chemistry of nature

WHAT ar THE distinctive PROPERTIES OF NANOSCALE MATERIALS?
Nanotechnology is associate exciting analysis frontier as a result of reducing the scale of associate object to micromillimetre proportions alters its properties. as an example, gold could be a yellow, shiny material that encompasses a high temperature and conducts electricity. it's comparatively inert, or un- reactive, that is why it's helpful for creating jewellery or cash Gold has precisely the same properties in a very massive bar because it will in a very little flake. however these properties don't extend gold nanoparticles. Gold nanoparticles ar with chemicals reactive and point color from red to purple. In general, nanoparticles have distinctive properties that adjust with size and composition.
How is that the PRINCIPLE OF ATOM ECONOMY wont to MINIMIZE WASTE in a very CHEMICAL SYNTHESIS?
Chemists use inexperienced chemistry principles to style processes at the atomic level to stop the formation of pollutants and waste Atom economy could be a conception formed by Stanford chemistry pre consid- fessor Barry Trost, that states that it's best to possess all or mos beginning atoms find yourself within the desired product instead of in waste by-products. It are often thought of because the potency of the reaction terms of range of atoms.

Kinetic studies and environmental measurements have shown that the principal explanation for gas depletion is that the presence of chloro- CFCs), such as CF,Cl2 and CFCl, within the layer. CFCs ar ideal as propellants aerosol refrigerants, as sol vents, and fire-extinguishing agents as a result of they're cheap nontoxic, ignitible, and unreactive. additionally, they're used for processing bubbles into foamed plastic insulation. sadly, the chemical stability that creates CFCs therefore helpful in industrial applica tions additionally causes them to move the surroundings. CFCs free at ground level travel into the layer, wherever they endure a com plex series of reactions that ultimately end in gas destruction. gas depletion because of CFCs happens throughout many the spring as a result of this can be the sole time of year that daylight is pres ent at the North and South Poles.

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