Data Analysis It was evident throughout the experiment that in the compound the metal determined the color of the flame. The color depended only on the metal component of the compound. The non-metal element that was in the compound did not mater. Compounds with Lithium (Li) were always red, compounds with Sodium (Na) were always yellow, compounds with Calcium (Ca) were always orange, Compounds with potassium (K) were always lilac, and compounds with Copper (Cu) were green. Going down the group there would be higher energy, which is shown through the visible color of the flame produced. It is shown in the graph how the energy of each wavelength in photon increases going down the group. For example, the metal Li shown in the graph has 2.84 *10-19 J energy and is located near the top of group 1, which is a lower energy level comparing to the energy of K which is 4.68*10-19 J. and is located in the middle of group 1, and had a higher energy level. Another relationship shown in the graph is that going to the right of a period metals decrease energy. This is shown with K, which has 4.68*10-19 J of energy and Ca, which has 3.43*10-19 …show more content…
The findings were that the unknown was potassium because both metals were lilac when KCl was tested and the unknown’s flame was lilac. Which also when the energy of photon calculations were done on them they were both were estimated the same wavelength frequency. Resulting to the same estimate energy of photon. The hypothesis was accepted, as it was possible to identify the unknown after testing out the metals. This is because after testing out all the metals and observing the different flame colors, KCL was lilac and so was the unknown metal. Which means that the unknown metal is potassium as the metal component of the compound determines the color of the flame. So K, which is potassium, is the
The incandescent light gave a continuous spectrum with all the colors showing. The fluorescent light had a line spectrum with all the colors. B.
The physical properties of Barium are solid, pale yellow, shiny, and a malleable metal in room tempature. The melting point and boiling give off a pale-green yellow. Some very interseting chemical properties of Barium is that it is malleable, flammable, very active, Alkaline Earth Metal Group, can be toxic, can react to water and other acids, but finally, to prevent such reacting, Barium is stored under Kerosense, Petrolem, or some other oily
Symbolism is a notable feature in Catching Fire. Through symbolism , Suzanne Collins manages to paint Katniss as the ultimate embodiment of rebellion through transferring her into a mockingjay . " A mockingjay is a creature the Capitol never intended to exist"(92), as it is a result of the Capitol's usage of the japperjays which were sent to spy on the rebels. However, the japperjays failed in their mission so the Capitol left them to die ,but they managed to survive through mating to female mockingbirds . This proves that the existence of the mockingjays is an act of rebellion in itself , an act of defiance excuted by the Capitol's own invention , long before Katniss has been born. .
The book “Forged by Fire” by Sharon M. Draper is a book with many themes and lessons we all can learn. One of the themes that this essay will talk about will be about loyalty. For one thing, loyalty is a strong feeling because it’s something that comes from inside of a person to have faith in someone . We are all loyal to someone, someone who’s special in our lives and plays a major role in our lives that drags us to support them no matter what. In this book, Gerald gets abused by his drunk father.
Have you ever wonder how does a crime scene investigator, known as a CSI, discover blood spatter on different fabrics, which is not visible to the human eye? The key is bluestar. According to the article “Influence of Bluestar Reagent on Blood Spatter Stain of Different Fabrics” by Arnon Grafit, bluestar is a “luminol-based reagent that is applied by spraying on surface.” Not only that, but “it helps obtain DNA and to analyze spatters patterns. By analyzing the article the reader is able to understand how bluestar works through the rhetorical techniques used.
This is a plain clue: "I found out later that it glowed because it had sucked phosphorus from the ground up into the wood and held the light from day all night." (Paulsen,
Chapter Sixteen: Fire Hazard The thug clambers out his behemoth of a car and walks my way. As rushed as I am right now, I pull out a flare gun, the thug hasn't noticed my firearm in this case scenario. He’s gets closer and pulls out his gun. He reaches for a magazine but with his unorganised nature it’s diminished in his brain where he had placed it.
This mixture had no discernable life-lengthening properties, but it did explode with a flash and a bang when exposed to an open flame. According to a text from that era, "smoke and flames result, so that [the alchemists '] hands and
These color changes indicate a chemical change, which show that a reaction had occurred. In the first step when o-vanillin and p-toludine, imine was formed. The color change from green to orange suggests that imine appears as orange colored. In the second step, the addition of sodium borohydride reduced the imine into another derivative, which was yellowish lime color. The solution turned clear when acids and anhydrides was added, which indicated the precipitate were dissolved.
Chemical compounds that are available to determine are CaCO3, CaCl2, Ca(NO3)2, mgCl2, MgSO4, KCl, HCl, HC2H3O2, KNO3, K2SO4, NaC2H3O2, Na2CO3, NaCl, Na2SO4, HNO3, H2SO4, HNO3, H2SO4, NH4Cl, (NH4)2SO4, K2CO3, 0.1 M AgNO3, 0.2 M BaCl, Mg(s), NaOH, and KOH. To start this experiment, start with the flame test by gathering a Bunsen burner and a Nichrome wire. Connect the Bunsen burner with a rubber tube to a laboratory gas. To prepare solutions for the flame test, weigh out 0.205 gram of Unknown Compound using an analytical balance and mixed it into a 140 mL beaker filled with 20 mL ionized water. Ensure that solid is completely dissolved using a stirring rod.
Also, some calcium-40 but it's not focused on. Potassium-Argon Dating is a method used to date old rocks and fossils (Khan). For example, a volcano erupts and potassium-40 and argon-40 are present in the lava. The argon-40 is a noble gas so it would seep out of the liquid lava because
A flood is a concern for water damage as well as mold problem in your home or business. Luckily, Oahu Extraction provides flood emergency services 24 hours a day and seven days a week, as well as expert services for water damage restoration and mold remediation in Honolulu, HI and the neighboring islands. When you have signs of a mold problem at home, their professionals will administer mold inspection and removal services to help keep you and your family safe. How do you know if you have mold in your home?
Copper Cycle Lab Report Ameerah Alajmi Abstract: A specific amount of Copper will undergo several chemical reactions and then recovered as a solid copper. A and percent recovery will be calculated and sources of loss or gain will be determined. The percent recovery for this experiment was 20.46%.
The wax melted first, followed by the salt, and lastly the sugar. The salt not only burned before the sugar, but developed a brown color throughout most of the substance at a faster pace. In the water solubility test, the salt dissolved in the water, as soon as it was properly mixed and the sugar dissolved in the water as well, but was stirred for a longer period of time until it was completely dissolved. The wax did not dissolve in the water, however bits of the substance broke off from the main piece. With this information, the final results included: wax as a nonpolar covalent compound, since the substance melted first and was not soluble in water; salt as a polar covalent compound, since the substance was soluble in water and the second to melt; and sugar as an ionic compound because the substance melted last and was soluble in
Introduction: This lab report discusses an experiment to study the difference in the burn rate of various colored candles. The objective of this experiment is to analyse the outcome of burning 5 different colored candles including white under the same control variable for 60 minutes. The white candles used in this experiment are pure and no chemicals or dyes are added to it. They are normally made from paraffin wax with a wick in the middle.