Purpose: The purpose of the lab was to identify a powder based on its physical and chemical properties. Materials & Apparatus: -eye protection -well plate -pipette -small toothpick/ paper clip for stirring -6 white powders: icing sugar, cornstarch, Aspirin powder, baking powder, mystery powder -test solutions in dropper bottles: water, universal indicator, vinegar, iodine solution Safety notes: Aspirin Powder- in case of contact with skin, wash with soap and water. Universal indicator- toxic, in case of contact with skin or eyes, rinse for 15 minutes. Iodine- rinse for 15 minutes in case of contact with skin or eyes.…
3.2.14 Citric Acid Monohydrate It appears as a white crystalline powder or as colorless-translucent crystals. It has a strong acidic taste and it is odorless. It is soluble in 1:1.5 parts of 95% ethanol and 1 in lesser than 1 part of water. It is sparingly soluble in ether (108).…
A list was made for the purpose of knowing which unknown substances were mixed…
For this experiment, a group was employed by the Environmental Protection Agency as analytical chemists. Their goal was to identify an unknown compound that has been discovered in a landfill in their hometown. Once they identified the compound, they would then have to determine both the chemical and physical properties of the compound in order to inform the townspeople of any potential dangers. During the first week of lab, the group was given a small bottle containing an unknown white crystal-like substance.…
Discussion and Scientific Explanations The main goals of this experiment was to find the unknown compound, to discover the compounds chemical and physical properties and create two synthesis of the compound and compare the two compounds. We found out our compound was ionic because the compound dissolved in water, but not in toluene or acetone by using a solubility test, results on Table 1 of the group lab report. On page 59 of the Cooperative Chemistry Laboratory Manual is a chart on suggested liquids and the inference if the compound is soluble [1]. When then checked the pH of the solution by using pH strip. The solution had a pH>7.…
Respectively, the known/unknown were reacted with HCl, NaOH, NaCl, CaCO3, and HNO3 and AgNO3. With the results lining up between the known and the unknown, more properties were identified and more evidence for a positive identification. The five reactions that were carried out further validated our conclusion, since the results were the same between the unknown and the known. For the four that did not react with the unknown, nor did they react with the hypothesized compound, validating the conclusion.…
Communication /6 Problem #2 Use the chart you just created to answer the following questions. a) Which substance would be the most corrosive? /1 Sample number 2 is the most basic and corrosive substance between the four samples.…
Discussion of Results: This experiment consists of three different parts. The main goal of the experiment is to identify the unknown compound the lab group was given. Along with this, the group is to discover the compounds many physical or chemical properties. Lastly, the group is supposed to create and preform two syntheses of the compound and see how they compare and contrast in different areas like costs effectiveness, safety, and potential yield of the compound. Through all of these different goals, the underlying key goal is to learn more about this unknown compound through the group’s own research and experiments.…
Why did you perform this experiment? The experiment was performed because people were seeing how many bubbles come up when the light is at different distances. The light is supposed to represent the sun and the plant we used was the Elodea.…
What I have found about this experiment is some really interesting ideas and other ways to the experiment. Some other people use Sodium or other words, for Sodium on the periodic table this chemical is called “Na” other people use that to make the Elephant Toothpaste. The call it Elephant Toothpaste because it’s supposed to look like toothpaste and since it's so big and it looks like toothpaste so the first thing people thought of was Elephant Toothpaste. Is that it was so deadly and that it would burn your skin off, then a scientist in Europe, discovered this amazing experiment. However, it did burn him the first time he tried this, however history of this experiment is so fantastic most individuals that have done this experiment have called…
Discussion There were four goals for Project 11: Identification, Properties, and Synthesis of an Unknown Ionic Compound. The first goal was to identify the unknown compound, the second goal was to determine the reactivity of the compound, the third goal was to determine the quantitative solubility of the compound in water, and the fourth goal was to find the percent yield of a product from a reaction involving the unknown compound. Determining the identity of the unknown compound was achieved by performing a variety of tests for the physical properties of the substance. Some of these properties, such as melting point and chemical structure, could be discovered by making a few immediate observations of the substance. The unknown compound…
When we first were signing up to choose our topics, I chose baking because I like to simply bake. I thought that there could be some chemistry involved due to heat in the oven changing food from liquid to solid. I was so wrong. Even though the oven and heat portion plays a major factor, a good portion of the real chemistry lies in the ingredients we use to make such delicious dessert treats and our different breads. From the ten different sources I looked up previously, for the Annotated Bibliography portion, I found that each of the websites say roughly the same thing.…
Experiment 1. Title: How does the amount of baking soda affect its reaction with vinegar? Aim: To find out how different amounts of baking soda (soda bicarbonate) affect the length of its chemical reaction with vinegar (acetic acid).…
Data Analysis The scientific question for this experiment is:” Does the amount of baking soda added to vinegar affect the amount of CO2 produced?” “If more baking soda is added to 50mL of vinegar, then more CO2 gas will be produced,” was the hypothesis. The independent variable was the different amounts of baking soda. Therefore, the dependent variable was the amount of CO2 produced.…
During the entire lab, the main purpose was to, Identify the given unknown salt through a variety of experiments which yielded valuable quantitative and qualitative data. Before any experiments were carried out, multiple properties were compiled in order to have a source to compare the found results with. Beginning with the first experiment to determine if the unknown salt was hygroscopic, efflorescent, deliquescent or none of the above properties. This test was done through weighing an amount of the salt and reweighing after 15 minutes which would show if the salt had one of the above properties (either by gaining mass from the air, losing mass to the air, turning to solution) or none of the properties. Furthermore, tests were done to identify…