equal parts sodium (NA) and chlorine (Cl)=NaCl) 3. ATOMIC NUMBER= # of protons MASS NUMBER= pro + neutrons 4. An Isotope is an element with the same number of protons and electrons but a different number of neutrons. RADIOACTIVE ISOTOPES the nucleus decays spontaneously giving off particles and energy. Useful for tracing cells in the body when they pick up this radioactive isotope. 5. The farther an electron is from the nucleus‚ the greater its energy. Numbers of electrons in the outermost shell
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IS NUCLEAR ENERGY A SOLUTION TO THE ENERGY CRISIS? Contents * Abstract * Introduction * Report * Conclusion * Bibliography * Appendix Abstract Nuclear energy could be the future of energy and potentially solve the energy crisis problem. Nuclear energy is a sustainable energy source and it can provide millions of times the amount of energy output from a fixed mass of fuel than any other energy source‚ such as fossil fuel‚ for the same mass of fuel.
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Physics Final Exam revision b 11/7/14 Directions: It is important that you provide answers in your own words. Please focus only on information from the text/eBook to create your own solutions. Please do not use direct information from an outside source (especially copying and pasting from an “answer” website). Use of direct information from an outside source is against school policy. All answers will be checked for plagiarism. Instances of plagiarism can result in probation or possible
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number - from hydrogen (1) to whatever is the highest one currently known (>105). It is arranged so that similiar members fall in a list such as Chlorine Bromine etc.. The average atomic weight is usually shown with each element‚ but due to isotopes (caused buy nuclear varations) the weight is the normal average atomic weight. The table illustrates the similiarity of various elements such as metals‚ noble gases‚ rare earths‚ halides‚ etc. in that they fall into series within the table. The
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Earth’s crust. The percentages of the halogens in the igneous rocks of Earth’s crust are 0.06 fluorine‚ 0.031 chlorine‚ 0.00016 bromine‚ and 0.00003 iodine. Astatine and element 117 do not occur in nature‚ because they consist of only short-lived radioactive isotopes. The halogen elements show great resemblances to one another in their general chemical behaviour and in the properties of their compounds with other elements. There is‚ however‚ a progressive change in properties from fluorine through chlorine
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-270.98°C becomes a superfluid. Helium becomes solid at -272.2°C at pressures above 26 atmospheres‚ helium boils at -268.9°C and has a density of 0.1664 g/litre at 20°C and one atmosphere. The stable isotopes of helium are a rare form of helium-3 and the most common form of helium-4. Isotopes from helium-5 to helium-10 are unstable and rapidly decay‚ these are only known from certain nuclear reactions and experiments with particle accelerators. Because helium’s’ electron shell is always full
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favors species that existed for a long time‚ were abundant and wide spread in certain kinds of environment and had hard shells. 2. Radiometric dating can be used to determine the absolute age of rocks strata because a radioactive parent isotope decays to a daughter isotope at a constant rate. The rate of decay is measured in half life. Measurement of magnetism
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The world trembled when America dropped the atom bombs on Hiroshima and Nagasaki. The world trembled once again years later‚ but this time to the heavy steps of Godzilla. Along with him came his highly radioactive body leaving trails of radioactive residue. His main abilities were his plasma breath ray‚ immunity to normal weapons‚ giant strength‚ and he can reproduce a-sexually. He was created for a horror movie that showed the effect of what worried the Japanese at the time- Nuclear weapons. In
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The Fukushima Nuclear Disaster A First-Hand Account of Japan’s Nuclear Crisis Katsumi Furitsu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28 Young doctors speak out on the Fukushima disaster . . . . . . . . . . .40 Japan’s Nuclear Nightmare Ronald McCoy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41 “A terribly difficult situation with a lot of uncertainties”: PSR Press Conference . . . . . . . . . . . . .
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Chapter 1: Biology- The study of life A Hierarchy of Organization 1. Molecules 2. Organelle 3. Cell 4. Tissue 5. Organ 6. Organism Emergent Properties- Novel properties that emerge as each step up the hierarchy of biological order is taken. Reductionism- Reducing complex systems to simpler components that are more manageable to study. Cells- The lowest level of structure capable of performing all the activities of life‚ all organisms are composed of cells which are the basic units of structure
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