This essay is about how sunblokck works and the correct methods to use it. It also emphasizes the danger of the sun rays ( UVA/UVB). Many experts have different opinions on the subject but in reality is up to us as individuals to either use …
Chemical Aspects of Life and Spit Lab Formal Report 1. Abstract The objective of the Reducing Sugar Test was to test if the substance has a reducing sugar in it by adding Benedict’s solution and heating it, there would be a color change if a …
Students were assigned unknown organisms and the objective of the lab tests was to identify of the unknown organisms. A microorganism can be identified as an organism that can be through the aid of the microscope. In a typical condition, microorganisms are said to contain …
Dangers of Bottled Water General Purpose: To Inform Specific Purpose: At the end of my speech my audience will able to describe the dangers of Bottled water. Central idea: Bottled water is not as safe as people believe it to be. Organization Style: Cause and …
The Ka and Molar Mass of a Monoprotic Weak Acid Chemistry Lab 152 Professor: James Giles November 7, 2012 Abstract: The purpose of this experiment was to determine the pKa, Ka, and molar mass of an unknown acid (#14). The pKa was found to be …
“Common biochemical themes are important to understanding cell injury and cell death regardless of the injuring agent” (Heuther & McCance, 2012). Cellular injury arises when a cell is unable to sustain homeostasis. The injury can be reversed if the cell can recover from whatever damage …
Importance of colloidal dispersion in pharmacy Pharmaceutical Applications of colloids: Colloids are extensively used for modifying the properties of pharmaceutical agents. The most common property that is affected is the solubility of a drug. However, colloidal forms of many drugs exhibits substantially different properties when …
Since the active site for all molecules of one enzyme will be made up of the same arrangement of amino acids, It has a highly specific shape. Generally, there is only one active site on each enzyme molecule and only one type of substrate molecule …
DEFINITION OF HEAT TRANSFER| Heat transfer is energy in transit due to temperature difference . Whenever there exists a temperature difference in a medium or between media, heat transfer must occur. The basic requirement for heat transfer is the presence of temperature difference . There …
To prepare boric acid from sodium deteriorate (borax) To carry out tests on the prepared sample of boric acid To study the physical and chemical properties of boric acid Introduction: Boron is an element in the p-block of the periodic table. It has the electron …
Flame Test Lab Question: When a compound is placed in the flame of a burner, what happens to the color of the flame? Hypothesis: When the compound is placed in the flame, the flame changes color depending on the chemical compound. When they’re heated, they …
The objective of the experiment was to determine if different factors affect the reaction rate of Alka-Seltzer. Alka-Seltzer provides fast relief to acid indigestion, upset stomach, heartburn, headaches, body aches and pains. It is an antacid and pain relief medicine used by millions of consumer’s …
Introduction: Suspensions are solid dipersion of insoluble or sparingly-soluble drugs, in aqueous like keltrol or oily vehicles such as emulsion. Suspension are used for oral administration, external application to the skin (topical) or parenteral administration.These particles suspended into liquid medium do not dissolve but have …
Nanomedicine: Obtaining the Benefits, Managing the Risks The phrase “small is beautiful” has taken on new meaning to Some nanomedicine drug-delivery systems and anti-cancer drugs those involved in the scientific field known as nanotechnology, are already in use. Many other applications are in various phases …
The free radical theory was firstly introduced in 1954 by Robert Gerschman and later was developed by Dr. Denham Harman from the University of Nebraska. The term “free radical” is used by the scientists to describe any molecule which is different from conventional molecules. (more…)
Citric acid reacts rapidly with iron, but is not itself the rusting of iron. The water in the lemon juice helps iron rust, but in the presence of air. The same happens when you open bottle of Coca-Cola, including citric acid, phosphoric acid, carbonic acid …
The University of Lethbridge Department of Chemistry & Biochemistry Chemistry 2740 Laboratory Experiment 2 A KINETIC STUDY OF THE BASE CATALYZED CLEAVAGE OF DIACETONE ALCOHOL USING A DILATOMETER The decomposition of diacetone alcohol into two molecules of acetone is catalyzed by hydroxide ions and is …
The structural compartmentation of mammalian cells and the differing functions of these compartments. All mammals are eukaryotes and therefore have eukaryotic cells. These cells contain several organelles suited to a specific function they carry out within the cell. These eukaryotic cells contain a Nucleus, Mitochondria, …
Herman von Fehling was a German chemist, who developed Fehling’s solution which was used for estimations of sugar. The Fehling’s solution is a chemical test used to differentiate between water-soluble carbohydrates and ketone functional groups, and as a test for monosaccharide. When working with Fehling’s …
[pic] Photosynthesis Outline Terms and Vocabulary Autotroph Photosynthesis Photon Pigment Chloroplast Reaction Center Electron Donor Molecule Electron Transport System Ferredoxin NADPH RuBP PGA Cuticle Stomata Rubisco Photorespiration C4 Pathway Concepts 1. What are two Adaptations of plant leaves for capturing light? 2. Describe the properties …
Assessment Task: Carbon Chemistry & Functional Groups 1. Why does the carbon atom make so many covalent compounds? Carbon atoms have 4 single valence electrons, which mean they can bond to 4 other atoms. It bonds in a tetrahedral shape, or make straight, bent or ring …
Chromatography is a separation technique in which the mixture to be separated is dissolved in a solvent and the resulting solution, often called the mobile phase, is then passed through or over another material, the stationary phase. The separation of the original mixture depends on …
Blackbody Radiation Lab 11 Go to http://phet. colorado. edu/simulations/sims. php? sim=Blackbody_Spectrum and click on Run Now. 1) In this lab, you will use the Blackbody Spectrum Simulation to investigate how the spectrum of electromagnetic radiation emitted by objects is affected by the object’s temperature. In …
Title: Caloric Content of Food Purpose: To be able to measure the energy content of foods. Procedure: We are going to take food items and burn them to heat water to be able to determine the amount of “energy” a food source can emit. Data …
Apparatus and Material: evaporating dish, Bunsen burner, wood splint, test tubes, micro spatula, dropper, mortar and pestle, test tube holder, safety goggles, lab apron. Piece of paper, NaCl (sodium chloride), water, 6 M HCL (hydrochloric acid), 0. 1 M AgNO3 (silver nitrate), Mg ribbon, 6 …
Abstract LDPE and HDPE were processed by extrusion, injection molding, and sheet extrusion. Their mechanical properties such as tensile strength and percent elongation were measured by tensile test and analyzed statistically (Table 2). During the extrusion process, both polymers underwent die swelling. The water cooled …
Exercise 1: Cell Transport Mechanisms and Permeability: Activity 1: Simulating Dialysis (Simple Diffusion) Lab Report Pre-lab Quiz Results You scored 75% by answering 3 out of 4 questions correctly. 1. The driving force for diffusion is Your answer : c. the membrane transport protein. Correct …
Introduction Living organisms have been classified by humans according to several different characteristics, one of them being the manner in which they obtain nutritive organic molecules (1), in other words, their food. Plants are denominated as autotrophs, organisms that can produce their own food from …
The third founder Alexandra (Sash) Compelling) is a 1987 MBA graduate from HOBS. Other MGM’ members include Dana Seaman (HOBS MBA student), Dave Clark (MIT graduate student), and Alexandra Jan Sarasota (Boston Berkeley College Music Business Management and Music Production and Engineering student). The founders …
Cherno Okafor Aida Stefani SBI4U Octover 20th, 2012 Assignment 1: Cellular Biology furthers technology-Enzymes in the Dairy Industry Since ancient times, enzymes have played an important role in food production. Especially in the diary industry, some enzymes are required for the production of cheese, yogurt, …
Conjugation
The word "conjugation" is derived from a Latin word that means "to link together". In organic chemistry terms, it is used to describe the situation that occurs when π systems (e.g. double bonds) are "linked together". An "isolated" π (pi) system exists only between a single pair of adjacent atoms (e.g. C=C)
Kinetic energy
Kinetic energy is the energy associated with objects in motion. Potential energy is the type of energy associated with an object's potential to do work. Chemical energy is the type of energy released from the breakdown of chemical bonds and can be harnessed for metabolic processes.
Physics
Chemical physics is concerned with the application of the concepts and theories of physics to the analysis of chemical systems and their physical behaviour. While also at the interface between physics and chemistry, it is distinct from physical chemistry.
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