Science Assignment: Q2 Part: Acrosome Function: The acrosome is the part on the head of the sperm. It is located on the tip and it is made of chemicals. The function of the acrosome is to dissolve the membrane of the egg so the sperm can fertilize it.…
This means that the unknown compound does conduct electricity. The compound was tested and had a pH of 5. This means that the compound is acidic according to the pH scale. Being acidic means that the substance has more hydrogen ions than hydroxide ions according to “pH”3 .The chemical and physical properties are stated in Table 1.…
Name ____________________________________ Lab-Getting Trendy Pre-Lab 1. Which property uniquely identifies a chemical element? (hint: the element’s “social security number”) ______________________ 2. Describe the general characteristics of metals, nonmetals, and metalloids. ______________________________________________________________________________________________________________________________________________________ 3.…
Parana Pine: For the Parana Pine I obtained the published value from a website since the values on the lab sheet didn’t have a values for Parana Pine. Firstly, I calculated my own Young’s Modulus Value with the result got from the tests using the equation for Young’s Modulus in Bending: E= l³/(4bd^3 ) x ( Δw)/( Δx) From using this equation, I achieved 14.44 E/GPa as a value, the published value, was: 11.37 E/GPa found on ‘The Wood Database’. The difference between my results and the Published values is: 3.07, and it was still within the range of the published value. Regarding the accuracy of the test, since this was my first time conducting this type of test, there may have been some mistakes I made that could have affected the results…
Investigating Properties Lab Ishan Godra SCH4U Lab Partner(s): DeSean Lawrence Ms. Boulougouris 10/31/14 Purpose The purpose of this experiment is to analyze the properties of four different types of solids: ionic, polar covalent, non polar covalent, and metallic Hypothesis It is hypothesized the samples which are shown to be insoluble are likely non polar, while soluble samples are polar. Because of the molecular nature of each type of bond, it is hypothesized that polar covalent molecules It is hypothesized that the samples which are insoluble in water are likely to be non-polar molecules or network covalent and the samples which dissolve are either ionic or polar molecules to have dissolved in the water.…
Gallium is one of those elements that is used in industry every day. Gallium was discovered in Paris at the private laboratory of Paul-Emile Lecoq de Boisbaudran (1831-1912) at 3 a.m. on August, 1875. He observed a new violet line in the atomic spectrum of some zinc he had extracted from a sample of zinc blende ore (ZnS) from the Pyrenees. He knew it meant that an unknown element was present. Gallium comes from Gallia, the Latin name for France.…
Through a series of test, the type of bonds each of the nine unknown solids exhibit could be identified. Solid 1 was confirmed of having polar bonds because of its high solubility in water and because it did not precipitate in base while solid 2 was identified as having ionic bonds because of its solubility in water and insolubility in hexane and alcohol. Like solid 2, solid 3 also has ionic bonding due to its solubility in water but also because it formed a precipitate in the base. Solid 4 has polar bonds because of its solubility in water and because it didn’t precipitate in a base. Solid 5 was the only solid identified with metallic bonding because it could conduct electricity as a solid while all the other solids could not.…
Pure water contains few ions, but if it is mixed with salt or other high ion…
Che was the seamless balance between the magnet and the hammer. Although he might have had some aspects that made him more the hammer or the magnet at times, there was no doubt that he had equal characteristics in both areas. Che knew how to predict what was going to happen and knew how to use the two sides to his advantage. In instances when he needed followers, he would put on the charm and elegance. Che was extremely well spoken.…
Sulfur Erbium Vanadium Iodine Cerium When I was in the 5th grade, I met this girl. She was different, smart, 78 years old, and funny. Entering Mrs.Prasla's room terrified, I stared awkwardly at this woman, trying to conceal all signs of life. Finally after holding my breath for a record 46 seconds, I did what any bright and intelligent young boy should do with an elderly woman 7 times his age; I offered her a peppermint and became her sugar daddy. We became best friends and the field trip soon became weekly chess tournaments, gardening lessons, and Facebook tutorials.…
The Periodic Table by Primo Levi was very interesting. You could really tell that he had a deep fascination with chemistry. He relates what happens in his life to the chemical elements. Each chapter of the book is named after a chemical element in the periodic table and he relates all of his life. He doesn’t seem to be able to separate his work life and personal life.…
A. After having viewed the 'Anatomy of a firework' interactive answer the following: What are the different parts that make up a firework? Fireworks have a few different parts such as Potassium Nitrate, Charcoal, and Sulfur and they use different chemical compounds to create three kinds of results:…
Furthermore, all 6 properties tested further solidified suspicions of the identity of the salt. Salt #287’s properties were initially investigated through a lab test to determine if the salt was Hygroscopic, Deliquescent, Efflorescent or none, and when the salt was left to react with the environment, it was found that the mass of the salt did not change from the initial mass over a course of 15 minutes, which would indicate the salt does not absorb water or lose water and does not have the above properties. Results found in this test are consistent with known properties of Sodium Chloride, being that it is not Hygroscopic, Efflorescent or Deliquescent. Thus, based on this experiment solely, it is not ensured that the salt is Sodium Chloride as 3 other salts share this…
Experiment Summary The purpose of this experiment was to determine the copper content of brass using iodometry. This was accomplished by creating a thiosulfate solution and standardizing it by titrating using a known amount of KIO3. The second part of the experiment involved preparing a brass sample and allowing copper to react with excess iodide to form I2. The resulting I2 was then titrated with the thiosulfate standard.…
The solubility rules were used to determine which reactant was aqueous and which one was a solid. The solid is the precipitate formed in the reaction. The formation of the precipitate indicates that a chemical reaction occurred. If no precipitate formed the reaction would be labeled with DNR, which stands for does not react. The solubility rules states which elements are soluble or insoluble, including the exceptions for each rule.…