Experimental purpose ： see the oil in the water will be like? the equipment ： the glass， who， one scoop of oil， and a chopstick steps ： the water into the glass， and a half cup in a spoonful of oil， there is any change to use chopsticks （) stir up and stop the experimental results ： whether or not， oil and water are floating on the surface of water， and in
About Green Chemistry What is green chemistry? Green chemistry， also called sustainable chemistry， is a chemical philosophy encouraging the design of products and processes that reduce or eliminate the use and generation of hazardous [1] Whereas environmental chemistry is the chemistry of the natural environment， and of pollutant chemicals in nature， green chemistry seeks to reduce and prevent pollution at its In 1990 the Pollution Prevention Act was passed in the United S This act helped create a modus operandi for dealing with pollution in an original and innovative It aims to avoid problems before they As a chemical philosophy， green chemistry applies to organic chemistry， inorganic chemistry， biochemistry， analytical chemistry， and even physical While green chemistry seems to focus on industrial applications， it does apply to any chemistry Click chemistry is often cited as a style of chemical synthesis that is consistent with the goals of green The focus is on minimizing the hazard and maximizing the efficiency of any chemical It is distinct from environmental chemistry which focuses on chemical phenomena in the In 2005 Ryoji Noyori identified three key developments in green chemistry: use of supercritical carbon dioxide as green solvent， aqueous hydrogen peroxide for clean oxidations and the use of hydrogen in asymmetric [2] Examples of applied green chemistry are supercritical water oxidation， on water reactions， and dry media Bioengineering is also seen as a promising technique for achieving green chemistry A number of important process chemicals can be synthesized in engineered organisms， such as shikimate， a Tamiflu precursor which is fermented by Roche in There is some debate as to whether green chemistry includes a consideration of economics， but by definition， if green chemistry is not applied， it cannot accomplish the reduction in the "use or generation of hazardous " Principles Paul Anastas， then of the United States Environmental Protection Agency， and John C Warner developed 12 principles of green chemistry，[3] which help to explain what the definition means in The principles cover such concepts as: the design of processes to maximize the amount of raw material that ends up in the product; the use of safe， environment-benign substances， including solvents， whenever possible; the design of energy efficient processes; the best form of waste disposal: not to create it in the first The 12 principles are: [1] Prevent waste: Design chemical syntheses to prevent waste， leaving no waste to treat or clean [2] Design safer chemicals and products: Design chemical products to be fully effective， yet have little or no [3] Design less hazardous chemical syntheses: Design syntheses to use and generate substances with little or no toxicity to humans and the [4] Use renewable feedstock: Use raw materials and feedstock that are renewable rather than Renewable feedstock are often made from agricultural products or are the wastes of other processes; depleting feedstock are made from fossil fuels (petroleum， natural gas， or coal) or are [5] Use catalysts， not stoichiometric reagents: Minimize waste by using catalytic Catalysts are used in small amounts and can carry out a single reaction many They are preferable to stoichiometric reagents， which are used in excess and work only [6] Avoid chemical derivatives: Avoid using blocking or protecting groups or any temporary modifications if Derivatives use additional reagents and generate [7] Maximize atom economy: Design syntheses so that the final product contains the maximum proportion of the starting There should be few， if any， wasted [8] Use safer solvents and reaction conditions: Avoid using solvents， separation agents， or other auxiliary If these chemicals are necessary， use innocuous If a solvent is necessary， water is a good medium as well as certain eco-friendly solvents that do not contribute to smog formation or destroy the [9] Increase energy efficiency: Run chemical reactions at ambient temperature and pressure whenever [10] Design chemicals and products to degrade after use: Design chemical products to break down to innocuous substances after use so that they do not accumulate in the [11] Analyze in real time to prevent pollution: Include in-process real-time monitoring and control during syntheses to minimize or eliminate the formation of [12] Minimize the potential for accidents: Design chemicals and their forms (solid， liquid， or gas) to minimize the potential for chemical accidents including explosions， fires， and releases to the
Purpose of the experiment: to see what happens when mixing cooking oil with Experimental equipments and materials: a glass cup， water， a spoon of cooking oil and a chopstickSteps: Water is poured into the cup in a half of 2: A spoon of cooking oil is Observe any 3 Stir the mixture with a chopstick for a while and then Results: Whether or not stirring， cooking oil is floating on the water It does not react with
