Daniel A. Parra Mr. Reimer Honors Chemistry‚ 5th 10/25/11 ‘Cause Baby‚ You’re a Firework How are the colors in fireworks produced? When I first thought about where the colors from fireworks came from‚ I thought that they came from food coloring that was mixed with gun powder. Also‚ from previous knowledge that I had about how neon lights were formed‚ I imagined that the electrons got excited when they got some sort of voltage or energy‚ and I also knew that when they got relaxed they emitted
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Bunsen Burner Founded by the German scientist Robert Bunsen‚ the Bunsen burner is one of the most common objects that you will find in any laboratory. The Bunsen Burner has many different parts that it is made up of. The parts that it is made of include the barrel‚ collar‚ gas flow valve‚ gas intake valve‚ and the base. The barrel is metal tube that will screw onto the base of the burner. It contains small holes called air intake openings at the bottom that allow airflow into the barrel. What
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Flame Tests The flame testing is a method used in chemistry to detect the presence of certain ions‚ primarily metal ions‚ based on each element’s characteristics emission spectrum. The colour of the flames normally depends on the temperature. Different types of Bunsen burner with flame types depend on the oxygen supply. The flame of rich fuel with no premixed oxygen produces a yellow diffusion flame. The flame of lean fully oxygen premixed flame produces no soot and the flame colour is produced
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Version 42-0160-00-01 Kellie Long Purpose: To observe the different flames of alkali and alkaline metals. Procedure: Place a little bit of each element into the well plate. Then you soak a tip of a cotton swab in each solution. Then you place the cotton swab over the Bunsen burner until the flame changes color. observations The color of the flame is expected to be as follows: Metallic ion Flame color Sodium Na+ Orange Strontium Sr2+ Dark
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color of the flame is expected to be as follows: Metallic ion Flame color Sodium Na+ Strontium Sr2+ Potassium K+ Lead Pb2+ Barium Ba2+ Copper Cu2+ Lithium Li+ Calcium Ca2+ Unknown Questions A. All chemical used in this test are binary compounds. What portion of the periodic table is responsible for the color observed? The metals are responsible for the Color change B. In cooking over an open flame‚ a yellow flame is often observed when some food is spilled into the flame? What is most
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of the flame is expected to be as follows: Metallic ion Flame color Sodium Na+ Yellow/Bright Orange Strontium Sr2+ Red Potassium K+ Light Purple Barium Ba2+ Green Copper Cu2+ Green Lithium Li+ Red Calcium Ca2+ Orange Unknown Red-Strontium Questions A. All chemical used in this test are binary compounds. What portion of the periodic table is responsible for the color observed? The Metals portion B. In cooking over an open flame‚ a yellow flame is often
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candle holders‚ to elaborate chandeliers.[2] For a candle to burn‚ a heat source‚ commonly a naked flame is used to light the candles wick which melts and vaporizes a small amount of fuel‚ the wax. Once vaporized‚ the fuel combines with oxygen in the atmosphere to form a flame. This flame provides sufficient heat to keep the candle burning via a self-sustaining chain of events: the heat of the flame melts the top of the mass of solid fuel‚ the liquefied fuel then moves upward through the wick via
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The very first experiment had the hypothesis that the temperature of a burner flame can be controlled by adjusting the ratio of gas to air in the mixture to be burned. During this experiment‚ my partner and I gathered our materials of the paper matches‚ straight pins‚ copper wire‚ laboratory burners‚ rubber tubing‚ tongs‚ and evaporating dish. Making sure we had our safety goggles on and the material we needed‚ we connected the Tirrill burner into the gas and lit the burner with the match‚ having
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When holding the test tube‚ keep fingers closest to the open end of the tube. B) Direct the flame of the burner into the open end of the test tube. C) Stopper the test tube with a rubber stopper. D) Wear goggles and a laboratory apron. 5. Base your answer on the diagram below and on your knowledge of biology. Which statement describes two unsafe laboratory practices represented in the diagram? A) The flame is too high and the test tube is opened. B) The opening of the test tube is pointed toward
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measuring the energy content and the safety glasses were for protection when burning the almond. Method: The first step in this experiment was to straighten out the paper clip so we could jab it through the almond and use it as a stick to keep the flame away from our fingers while we burned the almond. We then placed the almond and attached paper clip on a small aluminum foil dish. Before placing the three objects onto the scale‚ we had to zero it out and then place it on to record the total mass
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