Chemical substance

Decent Essays
Improved Essays
Superior Essays
Great Essays
Brilliant Essays
    Page 1 of 50 - About 500 Essays
  • Great Essays

    of Timothy Chase Willard and Marcus Bortey of Mr. Cork’s Second Period chemistry class December sixteenth of 2014 Background Information An emulsion is a mixture of two or more chemicals in liquid form with no mutual solubility. Emulsions are part of two-systems of matter called colloids. Colloids are particles that cannot be seen without the use of a microscope, but are larger than the size of the individual molecules involved in the emulsion. Usually the combination of a water, or water like substance and a oil, or lipid based substance together. The mixture is mixed thoroughly, usually by means of mechanical force, like shaking, forming a solution, resulting in a homogenized solution.…

    • 3072 Words
    • 13 Pages
    Great Essays
  • Decent Essays

    A top score must be kept of any materials deposited in the laboratory and in what way the chemical can be hazardous to health. The procedures for storing and handling the chemicals are shown to staff and then stored on a LIMS. This is important because you have to ensure sure awareness of health and safety issues with substances being used in the organisation. A record of any events that involved chemicals causing harm to staff should be kept. Chemicals that are hazardous to health are firstly…

    • 408 Words
    • 2 Pages
    Decent Essays
  • Decent Essays

    This particular lab will focus on separating the components of a ternary mixture, which is a mixture that contains three substances. Both physical and chemical methods are available for separating the components of a mixture. Physical methods use differences in the physical properties of components of a mixture, while chemical methods involve the selective reaction of one of the components of a mixture to form a new substance. In this experiment, five methods of separation will be used:…

    • 298 Words
    • 2 Pages
    Decent Essays
  • Superior Essays

    Utilization Of Marijuana

    • 1240 Words
    • 5 Pages

    Marijuana is one of the substances that has gotten a ton of consideration in people in general space in the late years. This is a result of the level headed discussion that it has pulled in over its utilization. Weed is one if the illicit substances that is being utilized by a few people for various reasons. A few people utilize the Maryjane for amusement, while others utilize it for medicinal purposes. There has been a critical number of strengths upholding for the legitimization of the weed.…

    • 1240 Words
    • 5 Pages
    Superior Essays
  • Improved Essays

    The melting point of a substance is best described as the temperature at which a solid becomes a liquid (Bruice 2014). On the molecular level, when a compound melts the forces between the molecules become weaker. This is because when a substances heats up the kinetic energy between the molecules increase causing the molecules to vibrate. When the vibrations become strong enough for the molecules to move around and pass other molecules, the compound that is being heated up starts to melt and…

    • 756 Words
    • 4 Pages
    Improved Essays
  • Improved Essays

    Melting Point Lab Report

    • 732 Words
    • 3 Pages

    AND HAZARDS PHYSICAL PROPERTY BENZHYDROL COLOR/TEXTURE White, fine crystals or dry powder ODOR Odorless BOILING POINT 297-298 °C MELTING POINT 65-67 °C DENSITY 1.31 g/mL HAZARDS SKIN, EYE, AND RESPIRATORY IRRITATIONS Irritation FIRE HAZARD Combustible is high temperature TABLE I: Table of physical properties and hazards of benzhydrol. PROCEDURE AND OBSERVATIONS ¬ FINDING MELTING POINT OF UNKNOWN SUBSTANCE: We used a micro spatula to retrieve unknown substance MP-14 from…

    • 732 Words
    • 3 Pages
    Improved Essays
  • Great Essays

    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…

    • 931 Words
    • 4 Pages
    Great Essays
  • Improved Essays

    Dupont Controversy

    • 1511 Words
    • 7 Pages

    discovered to contain toxic chemicals known as C8. Despite the many side effects that C8 had on lab animals during the testing phase, DuPont continued to manufacturer its products using the chemical. In spite of all the concerns raised by both its workers and inhabitants regarding the safety of the chemical, the company took no action to prevent these harmful substances from its customers or employees. Many individuals began to become affected both health wise and even economically. Women who…

    • 1511 Words
    • 7 Pages
    Improved Essays
  • Superior Essays

    Evaporation Lab

    • 1119 Words
    • 5 Pages

    We already knew that the chemical properties of each pure substance are not are not changed after separation in a mixture. The key to find a physical property that one part of the mixture does have but the parts of the mixture doesn’t. In magnetism a magnetically susceptible material is extracted from a mixture depending on a magnetic force. Filtration is separation of an insoluble solid and a liquid. Filtration depends on solubility, the filtrate is the one want to keep (liquid) and the residue…

    • 1119 Words
    • 5 Pages
    Superior Essays
  • Improved Essays

    Acetone Synthesis Essay

    • 1668 Words
    • 7 Pages

    The purpose of this experiment was to ascertain an unidentified substance. The substance in question was a colorless liquid with an odor resembling acetone. To start with the Tollens’ test was conducted on the unidentified substance to differentiate between an aldehyde and a ketone. The results of the test were negative. This indicated that the substance under consideration was a ketone The next step consisted of determining the melting point of the substance, which was in the range…

    • 1668 Words
    • 7 Pages
    Improved Essays
  • Previous
    Page 1 2 3 4 5 6 7 8 9 50