Neon- purple;420nm turquoise;515nm green;520nm green;525nm yellow;575nm yellow;580nm red;700nm red;710nm red;720nm red;745nm Mercury- blue;430nm blue;450nm green;540nm green;550nm yellow;570nm 4. Describe the line spectrum of the star. Give the color and wavelength value of the five brightest lines in the spectrum.: purple-420nm blue-440nm turquoise-500nm yellow-580nm red-700nm Conclusion: 5. Explain‚ in your own words‚ why different elements
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9/19/2012 Experiment #1-Density Aim: Learn how the process of distillation occurs. Observe how distillation separates alcohol from wine. Method: Distillation is based on the fact that the matter can exist in three phases - - solid‚ liquid and gas. As the temperature of a pure substance is increased‚ it passes through these phases‚ making a transition at a specific temperature from solid to liquid (melting point--mp) and then at a higher temperature from liquid to gas (boiling point--bp). Distillation
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Wavelength‚ frequency‚ and amplitude and energy. As a person in science‚ i should know the order of colours in the visible spectrum and the span of visible wavelengths. Question: if light is a .. Answer: max planck proposed that e.m radiation comes in units of defined energy rather than in any arbitrary quantities. Planck called it quantum The Photoelectric Effect Planck’s theories were used to explain a number of observations that had been troubling scientists. Einstein extended
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Arturo Contreras T. Conner-Moore Chemistry I Honors 22 August‚ 2016 Why is a Soccer ball consider Chemistry? What is chemistry? The word “chemistry” dates back to 1590-1600‚ but it is debatable that either the Egyptians or Greeks were the first to introduce chemistry to the world. What society does know‚ it is that Antoine Lavoisier is known as the “Father of Chemistry.” Lavoisier was the first to document how he compiled and completed the first list of elements. He discovered and named the elements:
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method used to separate a Solution‚ using a Paper and a beaker of water. The Substances in the Paper go up depending on their Mass. We can say that a Solution has the same substance as another solution because they form a line of the same height. 4) Describe methods of separation and purification: filtration‚ crystallisation‚ distillation‚ fractional distillation. Filtration: A way of separating Insoluble Solids from Liquids. With Filter Paper and a Funnel. Crystallisation: Separating Liquids
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DISPLACEMENT (PRECIPITATION) REACTIONS Objectives: 1. Learn how to determinate the percent composition 2. Learn how to get the percent using oxidation reduction and double reactions 3. To become more familiar with the use titration techniques 4. To learn how to get the salt out of an quimical Background: To develop and utilize procedures to determine the percent composition‚ of ZnCI2. As well titrating with NaOH solution. After all the experiment we got hta salt witch we weighted and we got
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have more electrons (which will have more electron shells) will have a greater atomic size. An atom with more electron shells is said to have an increased shielding. Example: Potassium (K) is larger than hydrogen (H). This is because potassium has 4 electron shells‚ whereas hydrogen only has 1 electron shell. An alternate way of explaining potassium’s larger size is to say‚ “Potassium has a greater shielding than hydrogen”. The period trend for atomic size is that it decreases across the periodic
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liquid 2) why are gasses considered fluids? Gasses are fluids because they are able to flow 3) what’s happens to gas particles when a gas is compressed? When a gas is compressed it will move gas particles closer and make the volume smaller. 4) what is the difference between force and pressure? Force is the pressure applied to an object. Pressure is moved when something moves. 5) what’s is the SI unit of pressure‚ and how is it defined? The SI unit for for pressure is Pascal. Pa‚
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Oxidation-Reduction Activity Series Peter Jeschofnig‚ Ph.D. Version 42-0186-00-01 Lab RepoRt assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that
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Test #3 Chapter 2: 1) What is matter? 2) What is mass? 3) Matter that has a uniform and definite composition is called a ______. Give an example. 4) A quality/condition of a substance that can be observed/measured without changing the substance is a ________ __________. Give examples. 5) What are the three states of matter? Put the correct state of matter in each box. 6) What is the difference between gas and vapor? 7) What is a physical change? Give an example. 8) A physical blend
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