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Flame Test Lab Report

1342 Words6 Pages

Introduction:
In this experiment, we are required to discover the 2 unknown chemicals provided by the teacher through the usage of different lab equipment and scientific procedures to conclude what the unknown substances are. The findings/results will be presented in a qualitative table and further discussed. There are 6 possible substances that the 2 unknowns could be. If the substance is benzoic acid then it would have to pass the organic solvent test because it dissolves in only organic solvents, while if it were silicon dioxide it would fail both solubility tests for organic and aqueous solvents. When doing the flame test, if the flame colour of the substance is yellow then it is either sodium chloride or sodium carbonate. The difference between sodium chloride and sodium carbonate is that the first is pH neutral while the latter is basic, which means a pH test would need to be conducted to …show more content…

Based on the chemicals table provided, it was evident that there is only one substance that can dissolve in an organic solvent; benzoic acid. If Substance B did not dissolve in an organic solvent then it likely would have been likely to have been one of the other substances. If it dissolved in water then a flame test would have been used to determine whether it was one of the four substances Sodium Chloride, Sodium Carbonate, Glucose and Potassium Chloride. However, if it had not dissolved in water it would have ended up being Silicon Dioxide. If the result for the flame test ended up being yellow then a pH test would have to be conducted to find out if the chemical was pH neutral or pH basic. If it were pH neutral then it would be Sodium Chloride and if it were basic then it would be Sodium Carbonate. However, if the colour of the flame test was light lilac then the chemical is Potassium Chloride and if the colour of the flame did not change at all then the compound is

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1367 Words | 6 Pages

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.

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824 Words | 4 Pages

Some compounds have very distinctive colors when burned, such as Potassium, which is a white/purple, and sodium, which is a deep red hue. The first step for a flame test is to gather the needed materials. These include beakers, distilled water, the unknown substance, a Bunsen burner, matches, a nichrome wire, tubing to connect the gas line to the Bunsen burner, goggles, and known compounds to compare with. The first step is to make aqueous solutions of all the substances to be tested. This is done by adding .5

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363 Words | 2 Pages

The purpose of this lab was to be able to use physical characteristics to determine the identity of an unknown compound. The data from this experiment classified aluminum as metallic; ascorbic acid, paraffin, palmitic acid, sucrose, graphite, and water as molecular; sodium chloride as ionic. In order to determine this, 3 tests were conducted. The first test was to test the conductivity of each substance at room temperature. In this test, only graphite and aluminum conducted.

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1222 Words | 5 Pages

Introduction The purpose of this Lab was to identify the density of the unidentified object and determine what substance the unidentified object given by the teacher was. The density calculated in the experiment will stay the same because the density of the unidentified object will stay constant. The Independent Variable of this experiment was the calculated density and the unidentified object given. The Dependant Variable for this experiment was the density.

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795 Words | 4 Pages

Sodium Bicarbonate mixed with Hydrochloric acid. The chemical reaction observed showed that there was fizzing and bubbling, this is evidence that a new gas was being produced. This new gas, CO2 was generated from the reaction. After the fizzing stopped a liquid was leftover leading me to conclude the liquid leftover leading me to conclude the liquid leftover was the NaCl and H2O 4. You found a sample of a solution that has a faint odor resembling vinegar (an acid).

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1204 Words | 5 Pages

each paper remained it's original color, thus concluding that the unknown was neutral. These results also led the students to believe the unknown was CaCl2 since it was listed in the neutral column. After the litmus test was conducted the students added a few drops of Na3PO4 to the unknown. When these two were combined a precipitate was formed. This final test on unknown F verified that it was CaCl2.

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680 Words | 3 Pages

Since it is also a solvent, it has many cleaning uses. We predicted at once that is could be isopropanol because of its smell. Question: “What is the identity of unknown 6 in test tube 20?” Hypothesis: If I test the characteristic properties of unknown 6 then I will see its properties to be the same or similar to isopropanol.

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646 Words | 3 Pages

I think that these properties were not tested because it would have taken much longer to check the mass, and boiling point. Testing for the scent of each of the powders may haven’t been much of a help as they probably all smell very similar. Also, we don’t have a stove top in the science classroom so checking the boiling point would be difficult. Another reason as to why that we didn’t check mass is because it would have been difficult to get the exact same amount of each substance for the measurements would be accurate. Finally, all those physical properties would result in quantitative measurements and we didn’t include any other quantitative measurements in this

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371 Words | 2 Pages

1. For the unknown light source, it had almost every color, so it might have been be mercury because they have similar color beams and their color from the naked eye appeared as purple, which mercury, a light blue, is very close to in terms of it's color from the naked eye. For the unknown flame crystals, it may NH4+ because the colors that appeared are very similar to the crystals. 2. Chemicals have to be heated in the flame for the color to emit because heat adds energy to the substance making the electrons more excited, allowing for the electrons to transition faster. 3.

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1066 Words | 5 Pages

During the Mixed Substances lab the objective was to see how many properties of individual substances compare with properties of mixed substances. From here on the words that would help you along the way of the lab for your research is mixture, homogeneous mixture, and last but least heterogeneous mixture. The hypothesis or guess on what would happen when the water is mixed with the cornstarch, is the cornstarch and water will mix and form a new liquid/solid. However, the Investigating Mixtures lab objective was to observe that not all liquids behave the same way when mixed with other liquids. Moreover the hypothesis of this experiment was that the vegetable oil and colored will separate because the vegetable oil will go to the top and the

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1337 Words | 6 Pages

Standard Sodium hydroxide solution is the alkaline solution that will be used to titrate with soda water as it is a common solution that can be easily found in an ordinary school laboratory. It is a strong base. Carbonic acid is a weak acid which will react with a strong base to form a basic (pH > 7) solution. When Phenolphthalein is added to Soda water, the resultant solution is colourless. After titration with a strong base (sodium hydroxide), the solution will turn to pink as the solution becomes

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1514 Words | 7 Pages

Some of the factors are thermometer was calibrated to determine its precision. The actual melting points of water, phenylacetic acid, o-anisic acid, and benzilic acid to their observed melting points were determined by calibrated thermometer. Then the solubility tests were run in order to determine the appropriate solvent for the unknown solute (Table 1). After determination of a solute, a vacuum filtration technique was used to determine the pure form of compound. The melting point of the purified sample was determined and compared to the melting points of other known compounds.

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114 Words | 1 Pages

The three-component mixture was separated through the isolation of each individual component. The isolation process began with o-toluidine, which utilized the addition of hydrochloric acid, sodium hydroxide, and dichloromethane—to the mixture—for the formation of an organic layer that contained pure o-toluidine. Then, the addition of sodium hydroxide and hydrochloric acid to the remaining mixture resulted in an organic layer, which contained pure benzoic acid precipitate. Finally, anhydrous magnesium sulfate and methylene chloride were added to the remaining mixture of anisole, which resulted in a pure anisole because it removed all residual water and boiled off excess methylene chloride used. The percent recovered from extracted anisole, benzoic

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902 Words | 4 Pages

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

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1478 Words | 6 Pages

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.

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