Chemical substance Essays & Research Papers

Best Chemical substance Essays

  • Chemical Substance and Local Chemical Recycling
    POLLUTION Assalamualaikum and very good morning to my beloved lecturer ,Madam Asmad and my fellow friends. How are you today? Have you take your breakfast? I hope all of you in pink. Before I start my speech today. I want to tell to all of you that the reading level of air pollution today really worried today than 20 years before. Today I will share with all of you about pollution. We could say that pollution is the harm that results because of the presence of a substance or substances...
    555 Words | 2 Pages
  • Classification of Chemical Substances - 1266 Words
    Experiment #17 Classification of Chemical Substances Prepared for: Dr. Robert O’Reilly By: Kudaibergenov Baizak 20.11.2013 Nazarbayev University Introduction While many thousands of substances are known, they can be classified into a few simple categories based on type of bonding that exists among the atoms in the substance. Bonds are chemical forces that hold atoms together to form molecules or compounds. These categories are ionic, molecular and metallic substances....
    1,266 Words | 6 Pages
  • Chemical Accidents - 428 Words
    he terms “chemical accident” or “chemical incident” refer to an event resulting in the release of a substance or substances hazardous to human health and/or the environment in the short or long term. Such events include fires, explosions, leakages or releases of toxic or hazardous materials that can cause people illness, injury, disability or death. While chemical accidents may occur whenever toxic materials are stored, transported or used, the most severe accidents are industrial accidents,...
    428 Words | 2 Pages
  • Chemical Reactions - 2150 Words
    Chemical reactions are the heart of chemistry. People have always known that they exist. The Ancient Greeks were the firsts to speculate on the composition of matter. They thought that it was possible that individual particles made up matter.

    Later, in the Seventeenth Century, a German chemist named Georg Ernst Stahl was the first to postulate on chemical reaction, specifically, combustion. He said that a substance called phlogiston escaped into the air from all substances during...
    2,150 Words | 5 Pages
  • All Chemical substance Essays

  • Pure Substances and Mixtures - 506 Words
    What is the particle theory? The particle theory says that that matter consists of many small particles with spaces in between. The particles are constantly moving, the higher it’s temperature, the faster they move. All the particles are attracted to each other. The particles move faster and move further apart when heated, and the reverse when cooled. Each substance has unique particles that are different from the particles of other substances. Particle theory helps to explain the behaviour of...
    506 Words | 2 Pages
  • The Properties of Chemical Reactions - 1587 Words
    Properties of Chemical Reactions Ms. Whitty, Science 10 Fiona Adams, November 1st, 2012 Introduction Chemical reactions are a part of our daily lives, from rusting metal to making bread to leaves changing colour in the fall. A chemical reaction is the process that occurs when two or more substances combine to produce a chemical change. When a chemical reaction takes place, the change is indicated by one or more qualitative properties. The colour or odor could change, gas could be...
    1,587 Words | 5 Pages
  • Observations of Chemical Changes - 1554 Words
    Ocean County College Department of Chemistry Observations of Chemical Changes Date Submitted: 09/22/2013 Date Performed: 09/19/2013 Lab Section: Chem-181DL1 Course Instructor: Dr. Nancy Marashi Purpose The purpose of this experiment is to observe and examine some of the properties of chemicals reactions and relate these chemical properties with household products. In this experiment, different chemicals are examined to observe how...
    1,554 Words | 7 Pages
  • Physical And Chemical Changes In NAture
    Science Homework: Research Physical and Chemical Changes that occur in nature. Describe two examples for each (3-4 sentences each) DUE: Thursday 5th February Many changes occur in our natural environment, both physical and chemical. Physical changes occur when a substance changes from one state (gas, liquid, solid) to another without alteration of the chemical composition. Contrary to chemical changes, physical changes are mostly reversible. Chemical changes take place when new chemical...
    350 Words | 1 Page
  • Physical and Chemical Reactions - 1000 Words
    Physical and Chemical Reactions Lab #4 Alesa Cannon Objective: To investigate the physical and chemical properties of a pure chemical substance. Procedure: 1. Half-fill one well of a 24-well plate with 6 M HCl and half-fill a second well of the 24-well plate with 6 M NaOH. Suck up these chemicals into their labeled pipets for later use. 2. Perform the following steps on each of the substances to be tested. Complete all tests of one substance and record your observations before...
    1,000 Words | 5 Pages
  • Physical & Chemical Properties - 756 Words
    Physical and Chemical Properties Pre Lab Questions: (4pts.) 1. What are the learning goals of this experiment? The goals are to investigate the chemical properties of pure chemical substance and to investigate the physical properties of pure substances. 2. Write two examples each of physical and chemical properties. Physical –Color, Odor, hardness, density, melting point, boiling point Chemical- heat of combustion, reactivity, ph, 3. What happens if you heat...
    756 Words | 5 Pages
  • Chemical and Physical Changes in Matter
    Chemical and Physical Changes in Matter Purpose: The purpose is to observe chemical and physical changes and to identify each. Procedure: Do experiments 1-8 as directed by the handout. Data and Results: Experiment | Observations | Type of Change | Supporting Evidence | 1 | -After a few seconds, yellow smoke was produced-Wood splinters are becoming black-Bottom part of test tube has black color on the sides-Some woods splinters have been burned to ash-Middle of test tube has...
    740 Words | 3 Pages
  • Physical and Chemical Properties - 1013 Words
    Laboratory Report 6 Date Performed: 04/02/14 Date Submitted: 04/15/14 Name: Lisa Jacoby Title: Physical and Chemical Properties Purpose: Investigating the chemical properties of pure chemical substances as well as exploring the physical properties of pure chemical substances Procedure: 1. I half-filled one well of a 24-well plate with 6M HCl and half-filled a second well of the 24-well plate with 6 M NaOH. I then sucked up these chemicals into their labeled pipets. I then...
    1,013 Words | 5 Pages
  • Defination of Chemical Agents - 565 Words
    1. Definition of chemical agent a chemical agent is a mist, a vapour, a gas, fumes or dusts of a chemical compound or a mixture of chemical compounds that present a hazard to the health of any person exposed to it. 2. Significance to occupational health and safety The parts of the Occupational Health and Safety Act (OHSA) that deal with toxic substances have two purposes. One is to ensure that worker exposure to toxic substances is controlled. The other is to ensure that toxic substances...
    565 Words | 2 Pages
  • Ovania Chemicals Case Study
    6/11/2013 6/11/2013 Job Analysis and Hiring Decisions at Ovania Chemical MBA 509- Section 4 Tahira Khan (1110877) Rajin Haq (1110878) Md. Abdullah Saleh (0730072) Instructor: Dr. M. Nazmul Amin Majumder Job Analysis and Hiring Decisions at Ovania Chemical MBA 509- Section 4 Tahira Khan (1110877)...
    1,675 Words | 6 Pages
  • Observations of Chemical Changes - 2221 Words
    Experiment 1: Observations of Chemical Changes Abstract: In the lab 1 experiment, the objective was to observed properties of various chemical reactions between twelve different basic compounds. Each reaction revealed chemical properties consisting of color change, CO2 gas formation, and/or precipitate formation. Certain reactions made it possible to distinguish between an acid and a base. Through the results of this experiment, chemical properties observed in the reactions could be used to...
    2,221 Words | 6 Pages
  • physical and chemical changes lab
    Santiago Canales Partner: Cody Patterson MR. G Physical and Chemical Changes lab Pre lab discussion 1. a- chemical change b- chemical change c- physical change d- chemical change e- physical change 2. Change in color, gas, light or smoke and heat. 3.Becuase if the temperature changes you can notice it better this way. 4. I will use goggles and cloves all the time, I also need to point dangerous materials away from other people and I should be specially cautious with...
    614 Words | 5 Pages
  • Ti Chemical Reaction In Automobiles
    research the chemistry behind a chemical reaction that is used in automobiles. Write a page that explains what the reaction is, where it occurs in the car, and what it does for the car. There are over one billion of cars around the world, getting people where they want to go. Therefore, automobile transportation became much more important in everyone’s daily life. Chemistry made the automobiles to work. The chemistry and chemical reactions used in many parts of the automobiles. The role of...
    562 Words | 2 Pages
  • Project1 ABC CHEMICALS - 2084 Words
    Project1 ABC CHEMICALS After reading the scenario about ABC Chemicals it was obvious that there were several apparent hazards and risks that I identified which needed to be assessed and either eliminated or controlled. These can be achieved using different Legislative measures and Codes Of Practice(COP) which is relevant to their Industry. By Looking further into the chemicals that ABC handle we can assess the presentable hazards Solvent: most solvents are either flammable or highly...
    2,084 Words | 7 Pages
  • Physical and Chemical Properties - 772 Words
    Title: Physical and Chemical Properties Purpose: To investigate the physical and chemical properties of pure substances as distinguishing characteristics. Procedure: 1. Set up a well plate with 24 pieces and fill two with either Dilute HCl or Dilute NaOH. 2. Set up four test tubes with any single substance in each one. 3. Observe and record original color and odor of substance. 4. Light flame with matches. -Hold test tube with substance in it over flame with clamps -Observe and...
    772 Words | 3 Pages
  • Observations of Chemical Changes - 2987 Words
    Experiment 1: Observations of Chemical Changes Purpose: To observe the macroscopic changes that occur in chemical reactions and attempt to interpret the microscopic changes of the atoms and molecules that allow for the macroscopic changes to happen; and to associate these chemical properties with household products. Also, it is to learn the importance of how to separate mixtures into their component substances by solubility. Procedure: Before starting with the official experiment, it was...
    2,987 Words | 8 Pages
  • Preliminary Chemistry. 'The Chemical Earth'
    Chemical Earth 1. The living and non-living components of the Earth contain mixtures Construct word and balanced formulae equations of chemical reactions as they are encountered 1. Build a word equation Reactants on left, Products on right 2. Convert word equation into chemical formula for the reactants and products Using valency rules 3. Balance the equation Adjust coefficients to get equal numbers of each kind of atom on each side 4. Specify the physical state for each species...
    2,041 Words | 11 Pages
  • American Chemical Corp. essay
    American Chemical Corp. 1. First of all the Collinsville plant is being used for the manufacturing of sodium chlorate. A chemical that the Dixon Corporation uses for the production of chloride dioxide and would complement their existing product lines. Since Dixon’s sales have been growing rapidly and the firm had been consistently profitable, the takeover of the plant is an interesting opportunity for the company to grow and expand its market share. The Collinsville plant is also...
    750 Words | 2 Pages
  • Lab Chemical and Physical Properties
    Jonah Bluh! Honor’s Chemistry ! Experiment Number 6 ! November 28, 2014 ! ! Physical and Chemical Properties! Purpose/Hypothesis:! • The purpose of this experiment is to investigate the chemical and physical properties of pure chemical substances. A property of a substance is some distinguishing characteristic. Some of the most common physical properties are color, odor, hardness, density, melting point, boiling point, and solubility in various solvents. For all of these properties, no...
    2,790 Words | 33 Pages
  • Physical and Chemical Properties - 871 Words
    Physical and Chemical Properties Chem 107 6-4-2013 A pure substance or chemical substance is a material that is homogeneous. It has consistent properties throughout the sample.” Pure substances can be described by both physical and chemical properties”. Physical properties can include, color, odor, melting point, boiling point, and solubility in various solvents, etc. The observation of these physical properties does not involve any chemical change in the substance, it is still the...
    871 Words | 4 Pages
  • chemical reaction and equations - 264 Words
    Chemical Reaction:- The transformation of chemical substance into another chemical substance is known as Chemical Reaction. For example: rusting of iron, setting of milk into curd, digestion of food, respiration, etc. In chemical reaction new substance is formed which is completely different in properties from the original substance, so in a chemical reaction chemical change takes place. Following are the signs of chemical reaction: (a) Change of state of substance. (b) Change of colour of...
    264 Words | 1 Page
  • Study: Chemical Reaction and Chemistry
    Chemistry is the branch of science that deals with the identification of the substances of which matter is composed; the investigation of their properties and the ways in which they interact, combine, and change; and the use of these processes to form new substances. Before understanding the importance of chemistry in general it is essential to know the importance of chemistry in everyday life. 1. Everything on earth is made up of chemicals: you, your food, and the products you use in...
    508 Words | 2 Pages
  • Physical and chemical change - 1781 Words
    Hong Yu Lui Wenzel Chem H D period Sep 13th, 2014 Lab report #1 on chemical and physical properties/ changes Introduction Summary: The purpose of this experiment is to allow students to understand how to differentiate physical and chemical properties and reactions of matter by observing changes of matters under circumstances. Physical properties are properties of matter that can be observed without changing the composition of the matter, including the volume, mass, color, density,...
    1,781 Words | 6 Pages
  • Observations in Chemical Reactions - 263 Words
    Introduction: A chemical reaction is formed of reactants and products. Reactants react with each other to give one or more product. Sometimes we can visualize observations that are characteristic of the reaction. Like for example a release of a gas (bubbles are formed) or a change of color or also the formation of a precipitate. Materiel needed: Test tubes Rack of test tubes Plastic droppers Beakers Procedure: We prepare 7 beakers of 7 different solutions (that we mark from 1→...
    263 Words | 2 Pages
  • Physical and Chemical Changes - 757 Words
    Shelby Brown 8/28/10 Physical and chemical changes lab essay Changes in matter occur every day. There are two types of ways matter can be altered; physically and chemically. Physical changes do not change the composition of the matter while chemical changes occur when one or more substances turn into a completely new substance. Physical changes can be seen through an altering of the substances physical property. A substances physical property is observed and measured without...
    757 Words | 3 Pages
  • Pharmacognosy: Chemical Compound and Drugs
    WHAT IS PHARMACOGNOSY? Pharmacognosy is the study of drugs of natural origin. The term comes from two Greek words: "pharmakon" meaning drug or medicine, and "gnosis" meaning knowledge. The American Society of Pharmacognosy defines pharmacognosy as "the study of the physical, chemical, biochemical and biological properties of drugs, drug substances or potential drugs or drug substances of natural origin as well as the search for new drugs from natural sources". Plant preparations are said...
    956 Words | 4 Pages
  • Physical and Chemical Properties - 673 Words
    Physical and Chemical Properties Purpose: The Physical and Chemical Properties lab provides the opportunity to investigate the physical and chemical properties of pure chemical substances and analyze the experiment results. Procedure: In the beginning of the experiment, I filled two 24-well plates half way with the given chemicals and sucked up these chemicals into their labeled pipets for later use. Following this, I performed a number of steps on each of the four test tubes and recorded...
    673 Words | 3 Pages
  • Chemical and Physical Reactions - 310 Words
    Report Submitted: February 17, 2013 Title: Physical and Chemical Properties Purpose: To investigate and learn the physical and chemical properties of pure chemical substances. Procedure: I used various different tools to investigate the different physical and chemical properties, such as blue and red litmus papers, beakers, and wells. Data Tables: Substance Name Color Odor Heat Effect Cold H2O Hot H2O Litmus Test Dilute HCl Dilute NaOH Mg Silver None None None Not soluble, small bubbles...
    310 Words | 2 Pages
  • Everything Is Made Up of Chemicals!
    1. Everything is made of chemicals. You are made of chemicals. So is your dog. So is your desk. So is the sun. Drugs are chemicals. Food is made from chemicals. 2. Many of the changes you observe in the world around you are caused by chemical reactions. Examples include changing colors of leaves, cooking food and getting clean. 3. Knowing some chemistry can help you make day to day decisions that affect your life. Can I mix these household chemicals? What are safe mosquito repellents?...
    1,158 Words | 4 Pages
  • Observing and Deciphering Chemical Changes
    Observing and deciphering Chemical Changes Purpose The purpose of this experiment is to observe reactions of chemicals that can be found in consumer products. Through observation, students should be able to interpret the chemical reactions and determine some characteristics, such as pH and solubility. Method 1. Pipets containing chemicals will be opened using scissors to snip the end and each pipet will be placed in a well of a 24-well plate. The scissors must be washed between each pipet....
    1,708 Words | 5 Pages
  • Experiment 4 Physical Chemical Properties
    Purpose: To investigate the chemical properties of pure chemical substances. To investigate the physical properties of pure chemical substances. Procedure: In this experiment, I will examine several physical and chemical properties of a number of elements and compounds. Student Material: 1 Matches LabPaq Materials: 1 Beaker, 100 mL, glass, 1 Burner-fuel, 1 Goggles-Safety, 1 Rod, Stirring rod – Glass, 1Test Tube(5), 13 x 100 mm in Bubble Bag, 1 Test-tube-clamp-holder, 1...
    1,114 Words | 6 Pages
  • Chemical Reactions Are Basis of Our Life
    Chemical reactions are the basis of life on earth. As human beings, we are little more than the naturally abundant elements of which we are composed and the reactions between the compounds that they form. After all, how could life exist without water? Oxygen transport in a body the size of the human body would be impossible without the aid of a complex like hemoglobin. Besides being the basis of many of life's intangibles, chemistry also plays an active role in our daily lives. Take for...
    665 Words | 2 Pages
  • Exp. #1- Observations of Chemical Changes
    Report Submitted: June 12, 2013 Title: Observations of Chemical Changes Purpose: The purpose of this experiment is to predict and examine chemical changes/reactions among common chemicals found in consumer products at a macroscopic level. Procedure: The procedure of this experiment was to carefully mix different chemicals together using the chemical filled pipettes and the 96-well plate and determining what chemical reactions occurred. Data Table: Observations of Chemical Changes...
    599 Words | 2 Pages
  • Resolution of Matter into Pure Substances: Paper Chromatography
    Resolution of Matter into Pure Substances – Paper Chromatography Abstract The purpose of this laboratory was to determine how different substances have different solubilities in a given solvent. This was accomplished using the method of chromatography. The solubility of each substance was first determined by dropping a drop or two of each on a line drawn 2 inches above the bottom of a piece of paper. Then the paper was lightly bent in order to tape both sides of the paper leaving about a 4...
    307 Words | 1 Page
  • Global Flame Retardant Chemicals Market 2014-2018
    Global Flame Retardant Chemicals Market 2014-2018 Flame retardant chemicals are responsible for preventing or delaying the combustion of materials and are indispensable elements in the protection of plastic products, electronic devices, construction material, insulation material, and textiles. They are halogen, nitrogen, and phosphorous containing compounds and are increasingly being used across various sectors and industries. Extensively used as additives to plastics and rubber materials,...
    429 Words | 4 Pages
  • Title proposal (Chemical Inventory and Tracking system)
    BICOL UNIVERSITY COLLEGE OF SCIENCE COMPUTER SCIENCE/INFORMATION TECHNOLOGY DEPARTMENT LEGAZPI CITY, ALBAY TOPIC TITLE: “CHEMICAL INVENTORY AND TRACKING SYSTEM for the BUCS LABORATORY” BACKGROUND: The Bicol University College of Science Laboratory is located under the premises of the Chemistry Department. The BUCS Laboratory has their own rooms provided for the different materials necessarily needed by the faculty and the students used in conducting experiments, one room for...
    635 Words | 3 Pages
  • 2nd Grade Unit 1 Measurement of Properties - Single Substance or Mixture.Doc
    2nd Grade Science, Unit 1 “Measurement of Properties” – Single Substance or Mixture GLCEs: P.PM.02.41 - Recognize that some objects are composed of single substances (water, sugar, salt) and others are composed of more than one substance (salt and pepper, mixed dry beans). Vocabulary: Single Substance – Anything that contains only one kind of material (salt, iron, water). Mixture - Combination of two or more types of matter which each keep their own properties. Magnetite – iron oxide...
    551 Words | 3 Pages
  • Do Cleaning Chemicals Clean as Well After They Have Been Frozen
    Do Cleaning Chemicals Clean As Well After They Have Been Frozen Problem: The researcher is trying to determine whether or not cleaning materials will clean as well if they have been frozen solid and subsequently thawed out until they have returned to a liquid state of matter. The researcher will use Dial Antibacterial Kitchen Cleaner, Clorox Bleach, and Parson's Ammonia, applied to simple bacon grease, to determine which chemical is least affected by the glaciation. Hypothesis: The...
    435 Words | 2 Pages
  • Global Electronic Chemicals and Materials Market Size, Analysis, Share, Research, Growth, Trends, Report, Opportunities and Forecast 2014-2018
    Global Electronic Chemicals and Materials Market 2014-2018 Publish By: Technovia Toll Free: +1 (855) 711-1555 Email: sales@researchbeam.com Report Overview Global Electronic Chemicals and Materials TechNavio's analysts forecast the Global Electronic Chemicals and Materials market to grow at a CAGR of 5.69 percent over the period 2013-2018. One of the key factors contributing to this market growth is the high demand for high-purity chemicals and materials that are used in...
    718 Words | 5 Pages
  • Example of a Pr Speech - 296 Words
    Tess Strang Jeffery Brand Speech Writing Johnson and Johnson: Apology to New Mothers In 2013 Johnson and Johnson created a product that was accidently injected with a harmful mixture of chemicals, which resulted in the company recalling all products. Promptly we would like to address the problem of our recent production of Children teething rings. Johnson & Johnson is currently working on removing and replacing all teething products made any time from January 22nd 2010 through March...
    296 Words | 1 Page
  • Senior Science Notes - 2290 Words
    1. LIFESTYLE CHEMISTRY -many consumer products have been developed because of increased understanding of chemical substances, chemical reactions & the biochemistry of human body surfaces -some products are used as cleaning agents while others have been developed to act as barriers against environmental factors like wind and heat -some products are mixtures, used for medicinal purposes, & require a different understanding of body chemistry & chemical interaction -production of...
    2,290 Words | 8 Pages
  • Chemistry Gr 9 & 10 Review
    Module One: Grade Nine Topics Physical Change: This is a usually reversible change in which the form of matter is altered, but is not chemically changed to another substance. Melting an ice cube is an example of a physical change. The ice cube changes states: from a solid to a liquid (water). You can physically see this change. No new substance is formed: the matter in the liquid is the same as it was in the ice cube. It is reversible: you can freeze the liquid to turn it back to...
    841 Words | 4 Pages
  • Drinking Alcoholic Beverages - Paper
    DRINKING ALCOHOLIC BEVERAGES An alcoholic beverage is a drink containing ethanol, commonly known as alcohol. Alcoholic beverages are divided into three general classes: beers, wines, and spirits (or distilled beverage). They are legally consumed in most countries, and over 100 countries have laws regulating their production, sale, and consumption.[1] In particular, such laws specify the minimum age at which a person may legally buy or drink them. This minimum age varies between 16 and 25 years,...
    3,311 Words | 9 Pages
  • Purity and Purifications of Solids Using Melting Points.
    Purity and purifications of solids using melting points. Tatyana Aleksandrova CHE 337, Section 001 Department of Chemistry Portland State University, Portland, OR                                                                     Abstract Melting points of Naphthalene/Biphenyl mixtures differing in their percent compositions were observed and plotted on a graph that indicated eutectic point of the mixture to be at 50 mole percent Naphthalene. Using...
    1,088 Words | 6 Pages
  • 3-acetylcoumarin - 385 Words
    Synthesis of 3-Acetylcoumarin Introduction In thi lab we were asked to make coumarin. Coumarin is a fragrent organic chemical compound. It is a natural substance found in many plants. The name comes from the french term for tonka bean. The substance was first isolated as a natural product in 1820. Coumarin has been showed to be useful in biological activity, but they have been approved for few pharmacutical uses. It has been reported that coumarin activity includes HIV,...
    385 Words | 2 Pages
  • Chem Lab 2 - 996 Words
    Experiment no. 2 Classification of Matter Morillo, Mary Jane J. Nidua, Maria Angelene Group no. 2/Chemistry Lab./Engr. Ma. Jeanette U. Obias Abstract The classification of matter was demonstrated through simple activities of mixture, heating and magnetic attraction describing its physical state , its chemical reactions and its separation to other substances. Simple reagents such as Iron filings and Sulfur powder in our experiment were considered as elements, while solid mixtures...
    996 Words | 4 Pages
  • Isolating the Components of a Three Component Mixture
     CHE 151-50 Fall 2013 Lab report Isolating the Components of a Three Component Mixture The purpose of this experiment was to separate the component of three mixtures sand, sodium chloride and calcium carbonate then calculate the percentage by mass of each component recovered from the mixture. The other purpose of this experiment was to show us the students the concepts associated with physical and chemical properties of substances. Me and my lab partner, obtained a mixture of a...
    854 Words | 3 Pages
  • Crime Scene Investigation: Who Killed the Owner?
    Susanna Skalikeu 10-6-10 Science Period 4 Crime Scene Investigation Background: The only evidence from the crime was a whitish powder found on the floor. There are three main suspects. The first is Anne Fryer. She uses corn starch (a whitish powder) as the secret ingredient in her stir fry recipe. Bobby Brulee uses baking soda (also a whitish powder) to make his special deserts. Charlie Croissant uses baking powder (also a whitish powder) all the time to fluff up his bread....
    768 Words | 3 Pages
  • Investigatory Project - 549 Words
    Chapter II: Review of Literature and Conceptual Framework Review of Literature: Garlic is commonly used in culinary and medicine. It grows up to 0.5 m (2ft) in height. Garlic helps prevent heart disease including atherosclerosis, high cholesterol, and high blood pressure and cancer. Garlic is used to prevent certain types of cancer, including stomach and colon cancers. A Czech study found garlic supplementation reduced accumulation of cholesterol on the vascular walls of animals...
    549 Words | 2 Pages
  • The Purity and Purification of Solids Melting Point Lab
    The Purity and Purification of Solids Melting Point Lab Introduction: The point of this lab was to determine the eutectic point for the naphthalene biphenyl mixture, as well as determining the melting point of an unknown substance by comparing it with two known samples. Melting point is a temperature in which a substance changes from solid state to liquid state. Melting points are used to determine whether the given substance is pure or not. Substances that melt sharply, less than 1-2°C...
    1,571 Words | 7 Pages
  • Legalization of Marijuana - 430 Words
    Shavon Kuhn Comp 2 April 11, 2013 Persuasive essay Legalize Marijuana I believe that marijuana should be legalized. Many people agree and disagree on this subject. I feel that smoking cigarettes does more damage then smoking marijuana. Because marijuana is an all natural substance and no extra chemicals are added to it like other drugs I feel like it is safer. I feel that marijuana should be legalized and cigarettes should be banned. Or we should at least have a few days a year when it...
    430 Words | 2 Pages
  • Mystery Powder - 837 Words
    Hector Buenrostro Alexys Tran Edgar Contreras Daniel Rodríguez 5th period 9 September 2013 The Mystery Powder Lab Report Introduction: One morning Ms. Mandell woke up to find a weird type of matter. It was a wired heterogeneous mixture we could tell where the solvent and solute separated. She has no idea what it is so she brought the sample to class to show us. The purpose of the lab is for us to try and figure out what makes up this heterogeneous mixture, by making observations on...
    837 Words | 3 Pages
  • CHM 1045 Experiment 3
    Purpose This experiment deals with separating substances. The objective was to become familiar with the methods of separating substances from one another using decantation, extraction, sublimation techniques. Brief Introduction This experiment was set to teach research students different methods of separating substances from one another. Materials that are not uniform in composition are set to be impure or heterogeneous and are called mixtures. The separation of the components of mixtures...
    1,043 Words | 3 Pages
  • Chem outline - 717 Words
    Chapter 1 Study of Chemistry -Chemistry is the study of matter and the changes it undergoes. It is a very practical science which means that it can be used to determine stuff we do in real life. For example, drugs, food, etc. are made by researching the chemical properties of the substance. -Matter is anything that has a mass and takes up space -Elements are the most basic substances something can be broken down into. There are about 100 elements known to scientists right now. There may...
    717 Words | 4 Pages
  • Preparation of Bromotriphenylmethane - 1271 Words
    Preparation of Bromotriphenylmethane Abstract The structure of a major component of star anise oil was derived by analyzing its IR spectroscopy melting point of after oxidation and purification. From the evidence obtained, it was concluded that the exact structured should be p-methoxybenzoic acid. Introduction The purpose of this experiment is to determine the structure of the major component of star anise oil. It is already known that this component has a molecular formula C10H12O....
    1,271 Words | 4 Pages
  • Science Study Guide: Minerals
    Key Terms: Mineral- a naturally occurring, inorganic solid that has a crustal structure and a definite chemical composition Rock- a large mass of stone Organic- derived from living organisms Inorganic- not derived from living organisms Pure Substance- a form of matter that has a constant chemical composition and characteristic properties. It cannot be separated into its several components without breaking its chemical bonds. Element- a substance composed of a single kind of...
    459 Words | 3 Pages
  • Egg Foaming Lab - 492 Words
    I. Purpose The purpose of this lab was to see how an egg would react through a chemical reaction if it were to be added with an acid and a base. II. Materials 1 egg 400 mL beaker Citric acid Baking Soda Water Food coloring (optional) Stirring rod III. Procedure 1. Crack open and separate egg by pouring yolk back and forth between egg shell halves with the whites in the beaker 2. Add 5.0 grams (1 tsp) of citric acid 3. Add 5.0 grams ( 1 tsp) of baking soda 4. Put 2-3 drops...
    492 Words | 2 Pages
  • Lab 1 Melting Point
    Abstract The objective of this experiment is to identify an unknown chemical by comparing its melting point with a known solid in table 1. Melting point is one of the characteristics of a chemical compound because it is dependent on the electro negativity and size of the compound. The compounds compared in the labs will be compared to chemical F. The known substances are: Benzil, p-t Butylphenol, Oxalic Acid, Thioacetamide, Acetanilide, Mandelic Acid, Benzoic Acid, Stilibene,...
    966 Words | 3 Pages
  • Seperation of a Mixture Lab Report
    SEPERATION OF A MIXTURE Purpose: The purpose of this lab is to find out how components of a mixture can be separated and analyzed. Procedure: The procedure for this lab report is as follows: 1. Mixture is taken, and has to be measured in order to meet the requirements of 2-3g. 2. The mass of the tray is measured and then the scale is zeroed out and the mixture is added to find out the mass of the original mixture. 3. Next, find the mass of the 250mL beaker, zero out the...
    1,137 Words | 5 Pages
  • The Purity and Purification of Solid's Melting Points
    The Purity and Purification of Solids Melting Points CH-337 Abstract: The purpose of this experiment was to find the eutectic point for the mixture of naphthalene and biphenyl. This was done by measuring the melting point of both pure substances and five mixtures of different ratios. The purpose of the second section was to identify an unknown sample by measuring its melting point and mixing it with two known substances and comparing them. The results suggest that the eutectic point is...
    880 Words | 3 Pages
  • Polymers: Polyvinyl Acetate and Polymer Ball
    Investigating the effectivness of PVA and PVAc as base polymers In the production of a polymer ball. Introduction A monomer refers to a specific group of atoms that from a molecular unit. When monomers are strung together like a long chain they form polymers. A good analogy of polymers, would be long connections of chains which become tangled like a bunch of spaghetti in a pot. The reason for experimenting with, and understanding polymers is because they play such a major roll and are...
    1,594 Words | 4 Pages
  • CAN CACAO LEAVES KILL PESTS?
    “CAN CACAO LEAVES KILL PESTS?” SUBMITTED BY: LOUIE ANNE C. DIVINAGRACIA SUBMITTED TO: MADEL F. VALENCIA I. INTRODUCTION A. Background of the study We all know that insects can be seen everywhere and the only way to prevent these insects are to use insecticides. For us, a house is a place of residence. It is usually a place in which an individual or a family can rest, store personal property, and prepare food in able for the house fulfils its function, we need to eliminate...
    431 Words | 2 Pages
  • Sci275 R7 Indoor Air Pollution 1 Done
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