Chemistry of Fireworks By Anuradha Sahu Everyone enjoys the amazing firework shows on the Fourth of July with the beautiful vibrant colors and sparks every year. Fireworks have been part of this world for a very long time. They have been used for enjoyment and for signalling purposes. Every culture has their own significance and use of fireworks. But all fireworks have something in common; the chemistry that makes them work. No matter where you find them‚ they are made up of the same compounds
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Almost everyone today recognize the Statue of Liberty‚ but not everybody know its history. Plans for the statue was first began in 1865 by Frenchman Edouard de Laboulaye. In honor of the United States’ love of democracy and French-American friendship; according to the National Parks Service. Commissioned to design the work‚ Bedloe’s Island in the New York Harbor was chosen as the location by artist Frederic-Auguste Bartholdi. Because of how it could be seen by boats of immigrants thousands of who
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Synthetic diamonds Halite Activity 1.2 Luster 1. Examine the luster of the minerals and place the letters that corresponds to the luster exhibited. Quartz _________ Galena _________ Limonite _______ Gypsum ________ Talc ___________ Native copper _________ 2. LAB REPORT 1. Name the physical property described by each of the following statements. 3. Breaks along smooth planes ______________________________________ 4. Scratches glass_________________________________________________ 5. Shines
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determine the limiting reactant of a chemical reaction that involves iron filings and a copper sulfate solution. Second‚ to determine the mole ratios between iron and copper and to show that a single replacement reaction occurs when iron and copper sulfate react with each other. And lastly‚ to determine/calculate the percent yield to better analyze the chemical reaction between iron and copper sulfate to produce copper and iron sulfate. The method used to perform this lab will be to combine a metal with
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Part II: Decomposition of hydrogen peroxide Appearance of potato and hydrogen peroxide combination: Lots of white‚ foamy bubbles around the potato slices. Day 2 Observations: Part III: Reaction between zinc and acetic acid Appearance of penny in vinegar after 30 minutes: Pretty dark coloured. Quite hard to see Lincoln’s head or the Memorial. Part IV: Reaction between baking soda and vinegar Description of what happened when the baking soda and vinegar were combined Immediately
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The Spectrophotometric Analysis of Copper in a Copper Oxide Ore Abstract In this experiment‚ the mass percent of copper in an unknown copper oxide ore was determined by using a spectrophotometer and Beer’s Law. The mass percent of copper was found to be 5.12 0.14%. Introduction In spectrophotometric analysis‚ the concentration of a solute is measured in a solution by measuring the amount of light that is absorbed by the solution in a cuvette placed in a spectrophotometer. A spectrophotometer
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Introduction to Measurement Mass‚ Length‚ and Volume Introduction Much of what we know about the physical world has been obtained from measurements made in the laboratory. Skill is required to design experiments so that careful measurements can be made. Skill is also needed to use lab equipment correctly so that errors can be minimized. At the same time‚ it is important to understand the limitations of scientific measurements. Concepts Measurement Significant figures Accuracy
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LAB REPORT FOR EXPERIMENT 3 COPPER CYCLE OLANREWAJU OYINDAMOLA TUESDAY 27TH February 2013 Abstract This experiment is based on copper‚ to synthesize some copper compound using Copper (II) nitrate solution to obtain copper metal at the end. Changes of copper complexes when various are added and filtering out the precipitate by using Buchner funnel for vacuum filtration .The experiment started with preparation of copper (II) hydroxide and addition of copper oxide then addition of droplets
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Additionally‚ another theme the story is trying to illustrate to the audience is that people aren’t always who they say they are. Some people are two faced‚ in which they seem like good people‚ but the reality is they are not. In the story‚ Mr. Koberman seems like a nice quiet man‚ but in reality he is a vampire causing harm to the world. No one shines attention on that‚ except for Douglas‚ all the adults just ignore and dismiss any suspicious things about the man upstairs. Ultimately‚ Ray Bradbury
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Chemistry SCH3U-B‚ Unit 2‚ Lesson 6: Key Questions 19. Based on the observations provided in the kitchen lab‚ “Developing an Activity Series”‚ the order of the four metals from most reactive to least reactive is: zinc‚ iron‚ nickel‚ copper. Zinc is the most reactive. The reaction occurred quickly… small bubbles (hydrogen) appeared straight away. As the reaction continued‚ larger bubbles (more hydrogen) appeared. At the end of the experiment‚ the nail was completely rusted. Hydrogen displaced the
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