I. Purpose: To observe the colors produced when compounds are introduced into a flame and the electrons become excited. To estimate the wavelength of light produced‚ then calculate the frequency and energy of the light II. Safety: Standard safety procedures III. Chemical Inventory: |Chemical Name: |Hazards: | |Lithium Chloride
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How does the chemical being burned affect the color of fire? Why do you think each fire burns a different color? The colors of the flames are are due to the different chemicals and substances. The bright yellow-orange of most wood fueled flames is because of the sodium‚ and when it’s heated‚ it emits the glow of the fire. The blue in some wood-fueled flames is because of the carbon and hydrogen emit a blue and purple aura. How are the colors produced by a chemical when it burns related to the atomic
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Publishing for the K-12 school market is an $8 billion industry‚ with three companies - McGraw-Hill‚ Pearson‚ and Houghton Mifflin Harcourt - capturing about 85% of this market. [32] Tablets are a $35 billion industry with roughly one in three adults owning a tablet. [33][34] As tablets have become more prevalent‚ a new debate has formed over whether K-12 school districts should switch from print textbooks to digital textbooks on tablets and e-readers. Proponents of tablets say that they are supported
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Flame Test Lab Period 2 Due: 10/19/11 Honors Chemistry Purpose/Objective: To observe the colors produced when elements are put into a flame and to prove when electrons jump down from higher layers they release energy in the form of light. Materials: CoCl2 Na2SO4 CaCl2 KCl SrCl2 CuCl2 LiCl Unknown A Unknown B Distilled H2O Q-tips Beaker Bunsen Burner Spectroscope Spot Plate Procedure: 1. Light the Bunsen Burner. 2. Fill a beaker
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Lab 1: Flame Test 11 Chemistry‚ university Preparation Conducted: September 20th‚ 2010 Purpose: To observe‚ and create a chart of the colours produced when solutions of known metal compounds are heated to high temperature. Question: What colours are produced when different metallic compounds are placed in a flame‚ and why this happens? Hypothesis/Prediction: Different salts will produce different colours when placed in a flame‚ due to the fact that each element has a different
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The metaphor of the storage and subsequent retrieval of memory is also sustained in Eternal Sunshine. Once again‚ the inscribed objects‚ which Joel brings to Lacuna to help create a virtual map of Clementine in his brain‚ are represented as housing the memories inscribed to them. Van Dijck writes: “Memory objects […] robust materiality seems to guarantee a stable anchor of memory retrieval—an index to lived experience.” Therefore‚ these objects also need to be erased in the process of forgetting
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Special Report Plastic Additive: A Techno-Commercial Profile B.G. SAMPAT E-mail: bgsampat@bom3.vsnl.net.in INTRODUCTION Every activity in modern life is influenced by plastics and many depend entirely on plastic products. All these plastic products are made from the essential polymer mixed with a complex blend of materials known collectively as additives. Without additives‚ plastics would not work‚ but with them they can be made safer‚ cleaner‚ tougher and more colourful. Additives cost money
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burner flame unattended. PROCEDURE: A. Lighting a Burner (see page 7) 1. Close air adjustment. Open air adjustment by rotating barrel 2 times. 2. Close gas adjustment valve. Open gas adjustment valve at least 2 times. 3. Strike match and hold flame at the top of the burner. 4. Turn gas on at main gas valve. 5. Adjust height of flame to 8-10 cm. (flame may be yellow or blue.) 6. Close air vents for luminous yellow flame. Open the air adjustment for blue and double-cone blue flames. 7. Draw
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“I have asked myself many times: Is the Filipino worth suffering‚ or even dying for? Is he not a coward who would readily yield to any colonizer‚ be he foreign or homegrown? Is a Filipino more comfortable under an authoritarian leader because he does not want to be burdened with the freedom of choice? Is he unprepared‚ or worse‚ ill-suited for presidential or parliamentary democracy? I have carefully weighed the virtues and the faults of the Filipino and I have come to the conclusion that he is
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Kiwi cheese Ltd. is a New Zealand’s one of the reputed company who manufactur the various kinds of cheese. I am working in this company at certain position. As the Company’s Operations Manager and Sales Manager received an E-mail on their website regarding the enquiry of exporting the cheese to India. My Boss ordered me to create a report for Board of Directors on the ‘conduct‚ financing and settlement of finances’ on the portion of this opportunity. In this report‚ I am going to lay out certain
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