April 26th‚ 2010 Ana Manzanares Level 6 Have you ever heard about dentistry and all the things related to dentistry? Well‚ according to Wikipedia “Dentistry is the known evaluation diagnosis‚ prevention‚ and treatment of diseases and conditions related to human mouth”. Dentistry is considered necessary to complete all human health. People who study dentistry are usually called dentists. This field has to do with tissues of the jaw (mandible)‚ the oral cavity‚ maxillofacial area and some
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Popular Persuasive Speech/Essay Topics • Do schools have the right to search students’ lockers? • Should children be given sex education in schools‚ or should this be the responsibility of the parents? • Reality T.V. shows are damaging to their views. • Sexually suggestive ads should be banned/broadcast only after 10:00 P.M. • Students should be allowed to use cell phones during school. • Students should be allowed to listen to music during the school day. • Cosmetic plastic surgery should
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Flame test: AIM: To determine which part of the salt is responsible for the characteristics in the flame. HYPOTHESIS: If we introduce a metal salt in the blue flame of the Bunsen burner‚ then the colour given off by the flame is due to the metal part of the salt. METHOD: (1) With a heat proof mat under the Bunsen burner‚ turn the gas on and light up the Bunsen burner with matches. (2) Pour enough Hydrochloric acid into a beaker. (3) Using your wire‚ dip it into the beaker containing Hydrochloric
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Emission Spectra & Flame Tests Intro The emission spectrum is used in modern chemistry to help further studies of wavelengths and the spectrum. When a metal in a compound reacts in a flame and produces a color‚ it helps to show the strongest color in the emission spectrum. The purpose of performing these operations on the flame was to see how different metals would react. Using a spectroscope‚ it is possible to observe the line emission spectrum produced by sunlight‚ artificial light‚ and
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In this lab‚ we tested the effect of flame on different chemical solutions. In order to do this‚ we used a wooden stick soaked in a metal and nonmetal solution‚ hovered it over a bunsen burner‚ and recorded the color that the flame changed to. The seven solutions we tested were lithium chloride‚ strontium chloride‚ calcium chloride‚ sodium chloride‚ barium chloride‚ copper chloride‚ and potassium chloride. However‚ we had another four additional solutions‚ which had unknown chemical composition
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dark when it’s finally light.” I heard these words being sang from the mouth of a very close friend of mine.. I believe he was talking about hope‚ and how you can use your past experiences to get yourself through your troubled times. Emily Dickinson and Maya Angelou also used their art to convey similar meanings. The works “Hope is a thing with feathers” and “Caged Bird” both talk about similar topics and use similar themes.These poems use figurative and literal language‚ talk about hope and how
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1. Figurative Language: I-) Metaphors: *The storm of grief: If someone has a storm of grief‚ they cry loudly‚ uncontrollably and for a long time. *Physical exhaustion that haunted her body: Here the writer is trying to say that the exhaustion was all over her body. *Breath of the rain: It means that you can feel the rain. *Monstrous joy: Here it is meant that the joy was so strong that it seized her body. (The qualities of a monster) ıı-) there aren’t any idioms in this text. ııı-) Symbols:
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Laboratory Report: Flame Colors of Metals Abstract The experiment about flame color of metals demonstrates how electrons jump into their excitedstate from their ground state as it came in contact with heat. As it return to its lower energy state‚it emits the absorbed energy in the form of light. A platinum or nichrome wire was dipped into aconcentrated HCL and was heated to clean it. The wire was dipped into different salt solutionsand heated in order to determine the metallic ion’s color and wavelength
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decomposition and the combustion reaction. Coloured flames are seen in movies to represent something magical that is occurring such as a ritual. This is due to the vibrant colours used which communicate a sense of unusual yet visual appearance. chemistry concepts found in coloured flames are combustion reaction‚ electrons and atomic structures‚ molecules and particles. The following will pinpoint two special effects which are explosions and coloured flames and define the chemistry concepts found within
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THE WORLD That’s a rather vague question. The earliest true humans were Homo erectus. These early humans only used stones to begin with. Their earliest technology was called Oldowan and involved breaking smooth‚ rounded pebbles from rivers in rather a crude fashion to get a sharp edge to cut with. Later they developed a more sophisticated technique‚ creating a large‚ hand-held item shaped rather like a teardrop. It had two sharp sides coming to a point and one dull‚ rounded side which the
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