Fireworks and What Makes Them Go Sparks! Colors! Things that go BOOM! Chemistry doesn’t get much better than this. Ever notice how minutes drag on for hours when you’re waiting for a fireworks show to begin? Everyone’s thinking the same thing: The sky is dark enough the hot dogs are all eaten…come on when are they going to start? Then the first rockets streak into the sky…Ooh! Aah! Yes‚ it was worth the wait. The birthplace of fireworks is generally recognized as China.
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Air Pollution * Pollutants enter the air from various sources‚ but burning of fossil fuels contributes the most to air pollution. * Exhaust fumes from vehicles contains soot (tiny carbon particles)‚ lead (from cars using unleaded petrol)‚ carbon monoxide‚ oxides of nitrogen and hydrocarbons due to the incomplete combustion of fossil fuels. * Burning of fossil fuels in the combustion engines of vehicles and electrical power stations also releases large amount of carbon dioxide into the
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* Introduction to Organic Chemistry Understand the basis of drawing organic structures Depicting 3-D structures in 2-D Most organic compounds have a three-dimensional structure. How do we represent structures on our two-dimensional page? For example‚ methane is a tetrahedral molecule: Bonds in the plane of the paper: Bonds coming towards the observer: (out of the page) Bonds going away
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Match and Water in a Glass Science Magic Trick Fun Trick with Fire and Water This is a simple and interesting science magic trick involving fire and water. All you need is water‚ a glass‚ a plate‚ and a couple of matches. Pour water into a plate‚ light a match in the center of the dish and cover it with a glass. The water will be drawn into the glass. Match and Water Trick Materials • plate • water • 2 wooden matches • a quarter or other large coin • colored water
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changes from solid state to gaseous state the moment it turns in to gaseous state and gases have a property to spread in all directions. After lightening the incense the molecules of perfume are in a gaseous state and mixing with the molecules of air in the room. All of them undergo random motion at all times as a result of the internal ("heat") energy that they have absorbed. The molecules often bump into each other‚ which causes them to mix if they were not mixed previously. Q-4. How does the
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Up in the Air—the thoughts of life Freya Sep‚10‚2012 Up in the Air—the thoughts of life Freya A decent movie should trigger the audiences’ thinking about the value of their lives or be slice-of-life. It should be impressive and can help the individuals realize their needs. The movie “Up in The Air” is such a movie that impress on me. Ryan (George Clooney) works as a downsizer‚ and a commendable business traveler who is always being alone
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established in 1993 and began operations on 18 November 1996. It was originally founded by a government-owned conglomerate‚ DRB-Hicom. On 2 December 2001 the heavily indebted airline was bought by former Time Warner executive Tony Fernandes’s company Tune Air Sdn Bhd for the token sum of one ringgit (about USD 0.26 at the time) with USD 11 million (MYR 40 million) worth of debts. Fernandes turned the company around‚ producing a profit in 2002. AirAsia’s CEO Tony Fernandes subsequently unveiled a five-year
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ordered. As a result‚ the inventory supplies have to be ordered and shipped air freight; which is very expensive. 2. Air freight bills keep growing both in numbers and in total dollar value of freight transported. What are the factors that have contributed to the development of this situation? Do they reflect efficient or inefficient management of supply‚ inventories‚ and production in firms such as this one? Discuss. Air Freight bills keep growing because there isn’t enough inventory on hand to
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ENERGY RESOURCES Energy is defined as ‘the capacity to do work’. Sun is the primary source of energy. Joule is the standard unit of energy in SI units. Energy utilization is an index of economic development‚ which does not take into account of ill effects/damage on to environment. From 1900 to 2000 population increased by 3 times while energy consumption by 14 times! Energy Resources All energy sources ultimately come from the sun‚ the moon or the earth. Sources of Energy Solar
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Propsoing a bag tax can indeed be a good thing. Many of our nation’s polution comes from plastic bags. When charging an additional 25 cents for a plastic we can use that money to clean up our world. Enforcing the bag tax wouldn’t be a problem‚ the cashier will add an additional 25 cents to your total for each plastic bag. A bag tax should be imposed upon communities because of the problems plastic bags impose on our enviroment. I support having a 25 cent bad tax. A bag tax is good for three reasons
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