...Lab Report 2 Sodium in Water & Flame Test Rui Li Sep 29, 2011 Purpose Metal in the Water The purpose of this experiment is to observe and rationalize the tends of experiment. Flame test To observe the flame color when different metal burns. The atoms of the elements are excited and emit light, giving the flame a distinct color. Experimental Details Metal in the Water Put the lithium, sodium and potassium into water, and then add phenolphthalein. Flame test Part A Clean the glasses, weight out 0.1g and add methanol into the watch glass. Metal Chloride | Flame Color | NaCl | Yello | KCl | Light Purpal | LiCl | Dark Red | CuCl2 | Blue | SrCl2 | Red Pink | Part B Burn the salt. Metal Salt | Flame Color | MgSO4 | No Change | LiNO3 | Dark Red | NaNo3 | Yello | SrCl2 | Dark Pink | CuCl2 | Blue Green | Part C Spay the metal on the Bunsen burner. Metal Chloride | Flame Color | NaCl | Yello | KCl | Light Purpal | LiCl | Dark Red | SrCl2 | Red Pink | CuCl2 | Light Blue | Calculations Metal in the Water Not Applied. Flame test Not Applied. Results Metal in the Water When observing the cut the length of lithium wire it looks dull, that is because the lithium has been expose in the air for a while. It supposes to be shining when freshly cut. When placing the lithium into water, the metal ball moved around with small bubble attached around. When placing the sodium into water, the metal move with white smoke, it swum...
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... Department of College of Natural Science, Michigan State University, Farm Lane, East Lansing, MI 48825 Chemistry 161, Section 10 Dr. Joseph Ward Abstract The goal of this experiment is to identify an unknown compound. To identify this compound a series of test were performed to find the chemical and physical properties of the unknown compound. The test performed; flame test, solubility test, halide test, acetate test, ammonium test, nitrate test, sulfur test, carbonate test, calcium test and pH test. When the flame test of the unknown resulted in a brick red color, it was determined that the unknown contained calcium. Another calcium test was tested and proved that the unknown was calcium. Since the unknown is dissolvable in water, CaCO3 was no longer a possible candidate because it is insoluble. The pH test for the unknown was 5 whereas the pH for calcium chloride is 8 and the unknown tested negative for halide, therefor calcium chloride was not an option for the unknown as well. The last calcium compound left was calcium nitrate which also had a pH of 5 and a brick red flame test color. Introduction There was an unidentified white compound found in the lab. The goal of the experiment was to identify what the unknown compound is and how to dispose of it safely. In order to find this information, the compounds chemical and physical properties needed to be determined. This was a given table of possible compounds the unknown might be: NaCl KCl Na2SO4 ...
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...or Yankee Candle Company, Scentsy Wickless Warmers are a safer, affordable and more efficient alternative, while providing many of the same results that you can get with traditional candles. Do you know how many house fires are caused by candles? According to U.S. Fire Administration (2013), 42 home fires are reported every day. That’s 15,260 each year! One-Fifth of reported candle fires, the candles are unattended or abandoned, and more than half of these candle fires start because something that can burn is too close to the open flame, such as mattresses, bedding, or curtains. Someone falling asleep while a candle is burning is a major concern when it comes to candles, and this exact situation accounts for 12% of these home fires. Scentsy Wickless Warmers use a low watt light bulb, instead of fire or flame, to heat the wax to a temperature just above body temperature; the risk of house fire is drastically reduced without an open flame. Although it is the most tragic, fire is not the only hazard that traditional candles pose. Because the fire burns the wick, wax and whatever is in the candle. These chemicals, toxins and allergens are released into the air that we breathe which could be just as deadly as a fire for some people, because it may aggravate asthma, cause allergy-like symptoms, or irritate the respiratory tract. Ever wonder what could be in the candles you burn? Well according to a study by South Carolina State University in 2009 ("Cnn Health",...
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...My Home-Made Biomass Gasifier Making your own gasifier is easy I've built a lot of alternative energy projects over the years. See my home-built solar panel and wind turbine pages. I've always wanted to build a wood or biomass gasifier too. Why? Well, the internal combustion engine is really an important part of our society and the basis of a lot of our transportation and portable power technology. It isn't going to be going away any time soon. I've mastered making my own electricity from the sun and wind, but that doesn't help my truck go down the road, power the lawn mower, or run my generator on cloudy, windless days. Those all have internal combustion engines, and they all need fuel to run. I finally decided it was time to master making my own fuel. Why pay the Arabs for it if I can make a working substitute myself? So what is A biomass gasifier? Basically is a chemical reactor that converts wood, or other biomass substances, into a combustible gas that can be burned for heating, cooking, or for running an internal combustion engine. This is achieved by partially combusting the biomass in the reactor, and using the heat generated to pyrolyse or thermally break down the rest of the material into volatile gasses. A well built reactor will also convert combustion byproducts like CO2 and water vapor into flammable CO and H2 by passing them over a bed of hot charcoal where they will get reduced. Thus the gasifier converts most of the mass of the wood (or other...
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...liquid state and is pale yellow in color, with a slight musty odor. MDI also has a list of chemicals and materials that it is not compatible with, to include water, metal compounds, acids, and amides. As the incident commander some of my responsibilities after calling the fire department would be to clear the area from the fire at a range of 800 meters in all directions. This includes the plastic recycling plant if it falls within the 800 meters. The commander may also need to contact local emergency services to shut down the parallel road that runs next to the planet. The local community that does not fall within the 800 meters, but should be informed and possible evacuated, due to the toxic fumes and the direction of the wind. All firefighters will need positive pressure self-contained breathing apparatus, chemical protective clothing. To extinguish the fire, since it is a large fire, fire department can use water spray or analcohol-resistant foam (Pipeline and Hazardous Materials Safety Administration, n.d.). One of the biggest corrective action that needs to take place in this organization is training. If members of the unloading teams were trained on the all the hazards that were present during the unloading phase, then welding operations would have ceased during the unloading process. The company might also want to address where the loading and unloading of these chemicals are going to take place. Any operation that produces a flame or spark should be as far away from...
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... Below I have listed the basic troubleshooting techniques. 1. The technician should first ask the PC user to demonstrate or recreate the problem. 2. The technician should than establish a theory of problem of cause. Check for burning smells, look for lights listen for beeps. The technician should also check the boot process to ensure it boots correctly and no issues are detected during the POST stage. 3. The technician should then test the theory to determine the cause, the technician should be practical in checking for the easy stuff first. The technician should also divide the problem into logical arras and continue subdividing the problem until it is isolated. 4. The technician should than establish a plan of action and implement a solution. The technician should have a plan that he or she has established that takes them through a process in resolving the problem and implementing a solution to the issue. 5. The technician should then verify full system functionality and implement preventive measures. The technician should never assume that a hardware component or replaced software repairs a computer, as there could be multiple problems currently within the computer. The technician should verify full system functionality and have the user test the computer in a normal condition to prove the problem is resolved. The technician should also consider what is needed to take preventive measure to try and prevent the problem from occurring again. 6. The technician should document...
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...GCSE ADDITIONAL SCIENCE B Additional Science B Unit 1 Modules B3, C3, P3 Specimen Paper Candidates answer on the question paper: Additional materials: ruler (cm/mm), calculator F Candidate Number B623/01 60 mins Candidate Name Centre Number TIME 60 mins INSTRUCTIONS TO CANDIDATES • • • • • • • • Write your name, centre number and candidate number in the boxes above. Answer all the questions. Write your answers on the dotted lines unless the question says otherwise. Use blue or black ink. Pencil may be used for graphs and diagrams only. Read each question carefully and make sure you know what you have to do before starting your answer. There is a space after most questions. Use it to do your working. In many questions marks will be given for a correct method even if the answer is incorrect. Do not write in the bar code. Do not write in the grey area between the pages. DO NOT WRITE IN THE AREA OUTSIDE THE BOX BORDERING EACH PAGE. ANY WRITING IN THIS AREA WILL NOT BE MARKED. INFORMATION FOR CANDIDATES • • The number of marks is given in brackets [ ] at the end of each question or part question. The total number of marks for this paper is 60. This specimen paper consists of 25 printed pages. © OCR 2005 Registered Charity Number: 1066969 BLANK PAGE Specimen Paper: Additional Science B 1 Answer all questions. Section 1 1. (a) Janet’s class is investigating the directions that roots and shoots grow. They grow bean seeds in jam jars. They put...
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...believe that toad sabotaged Luigi’s cake because no one suspects the toad. 1) You need to gather all the materials. Including mystery substances 1-6 2) Put mystery powder 1 on the plastic film in two piles, and test its reaction to vinegar then to iodine. Repeat this for mystery powders 2-6. 3) Record results 4) Make 6 small bowls out of the tin foil to hold the mystery powders. 5) Connect the Bunsen burner hose. 6) Turn on the gas and light with a striker. 7) Hold the tin foil bowls with the mystery powders in them with tongs, and then move the bowls over the flame for 20 to 30 seconds. 8) Record results Observations Vinegar Iodine Heat A White powder, Blue tint No Fizz No reaction Burned around edges B White powder, fine, clumps together Fizz Reaction Smokes, burns edges C fine powder, clumps Fizz No reaction No heating reaction D clumps, yellow tint, soft No Fizz Reaction Very quick reaction, Flames E very soft, very fine No Fizz Reaction Caught on fire early F clumps, fine powder No Fizz No reaction Melted but no burn till later G Fine powder, course Fizz Reaction No heating reaction In this experiment we got different results from the rest of the groups, but that was because my group was in a dark corner and was difficult to determine if iodine had a reaction. We did not need to vary from the...
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...the experiment and the materials that we needed. We then proceeded to put on our safety aprons and goggles. My partner, Wyatt, and I gathered the materials of a 100mL graduated cylinder (with a 0.1 accuracy), a pie tin, a small candle, and a lighter. We needed to be incredibly safe with the lighter. The only chemical is water. When we first got our pie tin, I noticed there was some wax already on the bottom meaning that it was already used. We had trouble getting the candle to stick to the pie tin, but we did and we filled the rest of the pie tin with water. When we lit the candle I could smell the fire. The graduated cylinder was placed over the candle and the flame started to die down and I could see smoke in the rest of the cylinder. As the flame died, the water around the candle started to rise. When the flame did eventually die, the water vacuumed up at a faster rate. The same results followed with other trials only with different readings. Although I noticed that if the wick of the candle was wet, it crackled before lighting. This phenomenon occurs because the oxygen in the air trapped inside the graduated cylinder was used by the fire so the water rose around it. The properties of matter that were demonstrated was solid, liquids, and gas thanks to changing temperature. The concepts that the demo shows is that when the oxygen is depleted from the air, the water becomes less dense and rises around the...
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...use is if it is spilt wipe the benches with Virkon to prevent microorganism growth. Disinfectants: low hazard. Wash hands after use. Ethanol: can cause a fire. Take care when using ethanol with the Bunsen. Bunsen: burns. Use carefully. Keep on yellow flame when not in use. E.coli: possibility of infections. Use a good antiseptic technique. Wear a lab coat. Cover cuts/ ware gloves. Depose of equipment in a bleach pot or bags for autoclaving. Hypothesis: I would expect to find that Dettol works better than Tesco’s disinfectant because it is said to work better than other leading brands. Equipment: Tweezers Borer Pipettes Suring (20Ym) Glass simmers Beaker of ethanol Bunsen burner E.coli 4 clean agar plates Virkon 30 Cm Ruler Micropipette Method: 1. 1 plate for each cleaner (2 plates used, other plates are in case a mistake is made) swamped the E.coli in the blue flame of the Bunsen burner. 2. Get a pipette of E.coli and up it on the plate. Flame the spreader (put it in ethanol then in the flame) be careful on to crack the spreader. Use the simmer to spread the bacteria around the agar plate 3. Flame borer (in the same way as the simmer but be careful if the borer is in the flame too long you can burn your hand. If you do run it...
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...Week 5 Assignment 3.2 Judith Loyer Professor Kim Elliott-White ENG315042VA016-1128-001 Professional Communications November 4, 2012 Ambiance Candles 987 Main Street, Suite #1, Silver Spring, MD 20904 November 11, 2012 Mrs. Mercedes Garcia 791 Lakeview Dr. Silver Spring, MD 20904 Dear Mrs. Garcia, According to the U.S. Fire Administration, they say that burning candles are the cause of approximately 15,600 fires, 1,270 injuries, 150 deaths, and an estimated of $539 million damages every year. Are you aware that 80% of burning candles are the cause of house fires? When you light up a fire free candle manufactured by Ambiance Candles, You will enjoy the lovely aroma that surrounds your home without worrying about those horrific statistics. Ambiance Candles is made out of real fragranced and with the soy plant, a plant source which prevents diseases such as cancer and heart disease. You can actually plug in your warmer and watch your candle burn fire free. The soy wax melts very slowly while you enjoy the sweet smells of your choice for 10 hours or more. We carry all of your desired fragrances. Ambiance Candles offers over 250 fragrances and 100 different warmers. When our dedicated customers writes their review about our candles, they say they are so excited about the different fragrances that we offer, and are very happy of how safe the candles are around their families and pets. We listen to our customer’s suggestions and ideas and that is the reason why we...
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...believe that toad sabotaged Luigi’s cake because no one suspects the toad. 1) You need to gather all the materials. Including mystery substances 1-6 2) Put mystery powder 1 on the plastic film in two piles, and test its reaction to vinegar then to iodine. Repeat this for mystery powders 2-6. 3) Record results 4) Make 6 small bowls out of the tin foil to hold the mystery powders. 5) Connect the Bunsen burner hose. 6) Turn on the gas and light with a striker. 7) Hold the tin foil bowls with the mystery powders in them with tongs, and then move the bowls over the flame for 20 to 30 seconds. 8) Record results Observations Vinegar Iodine Heat A White powder, Blue tint No Fizz No reaction Burned around edges B White powder, fine, clumps together Fizz Reaction Smokes, burns edges C fine powder, clumps Fizz No reaction No heating reaction D clumps, yellow tint, soft No Fizz Reaction Very quick reaction, Flames E very soft, very fine No Fizz Reaction Caught on fire early F clumps, fine powder No Fizz No reaction Melted but no burn till later G Fine powder, course Fizz Reaction No heating reaction In this experiment we got different results from the rest of the groups, but that was because my group was in a dark corner and was difficult to determine if iodine had a reaction. We did not need to vary from the procedures because they were clear...
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...A smouldering fire is a slow, low-temperature, flameless form of combustion which occurs under the conditions of restricted air supply and limited heat loss. In this case, a flame fire could have started, electrically, which might have been transformed into a smouldering one due to a reduction of oxygen in the closed room flat environment. The combustion products of a smouldering fire may be high with a minute amount of mass loss. Thus, deaths in the case of smouldering fires tend to occur after a long time especially if the death has occurred in a room away from the fire origin (Babrauskas, and Krasny, 1997). The 'site' of a flame fire in this case does gently push the smoke of the consequent smouldering fire away from itself, through the half-opened door into the living room. There is no other 'breeze' in the flat to disrupt this air-flow direction of the smoke. The...
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...so famous Christmas tree. These decorations are meant to spread cheer and joy but unfortunately may increase the chances of fire in the home. Based on data from the National Fire Protection Association (NFPA) and the U.S. Fire Administration (USFA), in 2011 there were an estimated 240 home fires involving Christmas trees and another 150 home fires involving holiday light. Together, these fires resulted in 21 deaths and $25.2 million in direct property damage. Each year, newspapers have tragic stories of families killed during the holiday season by fired ignited by the family Christmas tree and other holiday decorations. Typically, shorts in electrical lights or open flames from candles, lighters or matches start tree fires. A dried out live tree is easily combustible. Candles, which carry open flames, that are not properly placed can be knocked over and ignite anything flammable around them. Pixie lights can also be fire culprits during the holiday season often due to improper use. Many people tend to overload the extension cords they use for their holiday lights and leave them plugged in 24hrs per day. Following a few simple fire safety tips can keep electric lights, candles, and the ever popular Christmas tree from creating a tragedy in your home. To help ensure that you have a fire safe holiday season take care to keep you tree watered, if you decide to use a natural tree. Well-watered trees pose less of a fire risk. Also take care not to...
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...Early on Friday morning, the students of Mr. Jackson’s grade 12 chemistry class in room 269 were getting ready to complete an lab experiment. The experiment required the usage of the bunsen burners. The students were put into groups and promptly followed the procedure on what they had to do. One group of students had left their station in order to speak with the teacher. However, within seconds, the bunsen burner that they had left unattended proceeded to tip over sparking a fire. The fire quickly spread throughout the classroom and damaged valuable equipment, including the desks, chairs, and even one student’s laptop. Three of the students in the group nearby the fire, had received first degree burns from the sparks of the flames. As the...
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