(water or gas)‚ which runs through turbines. These either drive a ship’s propellers or turn electrical generators. Nuclear generated steam in principle can be used for industrial process heat or for district heating. Some reactors are used to produce isotopes for medical and industrial use‚ or for production of plutonium for weapons. Some are run only for research. Today there are about 450 nuclear power reactors that are used to generate electricity in about 30 countries around the world. Types of nuclear
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NUCLEAR ENERGY Nuclear energy is the energy contained in the centre ‚ or nucleus of an atom. The nucleus is the most powerful source of energy that exist. Nuclear energy is use in scientific research and in medicine treatments. It powers satellites and submarines‚ and it is used to produce electricity. People have also put nuclear energy to destructive uses through the creation of weapons.1 Nuclear energy also called ATOMIC ENERGY‚ energy
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Natural Disasters in Nuclear Energy Development Carlaine Puckett Strayer University Abstract The modern day dependency on fossil fuels has led to a global search for ethical and environmentally-sound alternative energy. Among the most powerful is nuclear energy‚ though it is mired in controversy. This essay describes‚ among other things‚ the nuclear energy process‚ and with it the weaknesses. Amid the hope of one day using nuclear energy as a “green” energy source
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Rubidium is a chemical element that was discovered in 1861 by Robert Bunsen and Gustav Kirchhoff‚ in Heidelberg‚ Germany through a scientific process of flame spectroscopy. During the process‚ Kirchhoff and Heidelberg noticed bright red lines in its emission spectrum which caused them to choose the name Rubidium derived from the Latin word rubidus‚ meaning "deep red". Rubidium is a chemical element with symbol Rb and atomic number 37 and an atomic mass of 85.4678. Rubidium is a soft‚ silvery-white
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CHAPTER 2 REVIEW Geocentric:earth centered-aristotle- greeks Heliocentric-sun centered-copernicus Retrogade motion - Apparent backwards motion of planets Parallax-earth goes around the sun‚stars(background). Appears to shift. Cant be measured‚ so far away. Kepler’s Law (1&3)- Ist orbit are ellipses ‚ 3rd mass of the star‚ solar masses/ distance from the star. The idealized scientific methodBased on proposing and testing hypothensis Hypothesis -educated guess (Book and Paper demo) Hallmarks
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that powers the stars. Fission takes place when an unstable nucleus of a heavy element‚ such as uranium‚ splits in two. Fission is used in nuclear power stations (Kindersley‚2007). * How are nuclear reactions controlled? The fission of radioactive uranium produces nuclear energy. The procedure is controlled by
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WJEC CBAC AS/A LEVEL GCE in Chemistry REVISION AID UNIT 1 AS UNIT CH1 – Controlling and Using Chemical Changes (in order to make things‚ produce energy and solve environmental problems) Preamble This unit begins with some important fundamental ideas about atoms and the use of the mole concept in calculations. Three key principles governing chemical change are then studied‚ viz. the position of equilibrium between reactants and products‚ the energy changes associated with a
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for gold mining are South Africa and a lot of US productions come from South Dakota and Nevada. The symbol for gold is Au for its Latin name Aurum rather than the English G. The atomic number is seventy nine but Gold has isotopes which are stable and radioactive. A stable isotope is 197 Au and there are 36 radioisotopes with 195 Au. Gold is a dense‚ shiny‚ ductile metal the most characteristic feature is that gold is a metallic yellow color which gives it the gold color. Because of the the color
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a very high speed particle with no charge. False Ionization energy is required to add an electron to a neutral atom. False The nuclear product of radioactive decay is called the daughter nuclide. True A gamma ray emission results in the release of energy without any apparent change in mass or nuclear charge. True The half-lives of unstable isotopes vary from milliseconds to billions of years. True The combining of atoms is known as nuclear fusion. True Multiple choice (27points) The man responsible
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Copper is the 29th element in the periodic table‚ located more specifically at group 11‚ period 4. Because of its chemical and physical attributes‚ it is a transition metal‚ which denotes high boiling and melting points. Both a conductor of heat and electricity‚ Copper is ductile and malleable. Its symbol “Cu” derives from the Latin cuprum. Copper is also valued for its two-for-one practicality: it is a vital nutrient that has antibacterial properties. Aside from what many people generally know about
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