• Sodium Chloride Oxygen Beaker Enzyme
    1,273 words
    DESCRIPTIVE TITLE The Effect of Different Amounts of Sodium Chloride on the displacement of oxygen. INTRODUCTION The dependability of the rate of an enzyme-mediated reaction is based on two factors: the substrate concentration and the concentration and action of the enzyme that catalyzes the reaction (Vander, et. al. , 2001). Enzymes are catalysts that produce chemical reactions in cells. Enzymes which are large proteins perform a reaction which acts upon a substance known as a substrate. When ...
  • Neutralizing Acids And Bases
    1,843 words
    ... n juice, and many others. Since I didn't have a source for hydrochloric acid, I added salt to vinegar to create HCl. I did the exact same experiment, using a ten to one acid to base ratio after testing them with pH paper, carefully wrote down the results, and then cleaned all of the used equipment. I repeated this until I could find no other chemicals to test, and than I made my charts. Discussion The following documents the outcome from my experiments. You can find the rest of the charts e...
  • Evaluating An Enthalpy Change That Cannot Be Measured Directly
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    Evaluating An Enthalpy Change That Cannot Be Measured Directly. Dr. Watson. Introduction. We were told that sodium hydrogen carbonate decomposes on heating to give sodium carbonate, water and carbon dioxide as shown in the equation below: - 2 NaHCO 3 (s) Na 2 CO 3 (s) + H 2 O (l) + CO 2 (g) = DeltaH 1 This was given as deltaH 1 and we had to calculate as part of the experiment. This however cannot be measured directly, but can be found using the enthalpy changes from two other reactions. These ...
  • Alkali Metals Sodium Compounds Potassium
    1,027 words
    The six chemical elements that are known as alkali metals are lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and the extremely rare radioactive substance called francium (Fr). Cesium and Francium are the most reactive elements in this group. The word alkali comes from the Arabic word al-q ili, meaning plant ashes. Plant ashes were the first source of alkali metal compounds. The alkali metals occupy the first column of the periodic table of the elements. Since these metals ...
  • Hardness Ion Water Hard Ions
    762 words
    Solutions & Solubility Pure water, which is an odour less, colorless, and tasteless substance is often called the universal solvent. As water moves through soil, it dissolves very small amounts of minerals such as calcium and magnesium. The greater the content of calcium and magnesium, the more hard the water is. Therefore, hard water is the result of an excess of two elements, C and Mg. The hardness of water is measured in grains per gallon (gig), milligrams per litre (mg / l ) or parts per mi...
  • Sodium Bicarbonate Acid Stomach Antacids
    1,200 words
    Which Antacid Works the Best? Heartburn is a condition characterized by a burning feeling in the chest and a sour or bitter taste in the mouth. Heartburn usually develops when the acidic contents of the stomach flow back, or regurgitate, into the esophagus, the muscular tube that carries food from the throat to the stomach. Approximately one in ten adults experience heartburn once a week. Heartburn is more common in pregnant women because of the pressure the expanding uterus exerts on the stomac...
  • Sodium Pure Form
    717 words
    Sodium, a silvery white-metallic element classified under the alkali metals, has an atomic number of 11 and a mass of about 23 g. Sodium has been known since early times and was used by the people of Mesopotamia and Egypt to make glasses. Sodium is the sixth most common element found on the earth, usually not found in nature but more often in compounds such as salt (Na Cl). It's regularly found in compounds among dry lake beds, underground, and as well as in sea water in such places as: Belarus,...
  • Minerals Calcium Helps Blood
    284 words
    Minerals Minerals are required to build soft and hard body tissue. Without then we wouldn't exist. They also help out with the nervous system the contraction of mussels and help the blood flow properly. Minerals are classified into 2 major groups. The major elements such as calcium, magnesium, iron, iodine etc. Then the trace elements such as copper, manganese fluorine and zinc. Once of the most important is calcium. Calcium is used to build up your bones. It also helps to keep your teeth stron...
  • Fluids And Hydration Sports Drink
    1,004 words
    How important are fluids? Fluid replacement is probably the most important nutritional concern for athletes. Approximately 60% of your body weight is water. As you exercise, fluid is lost through your skin as sweat and through your lungs when you breathe. If this fluid is not replaced at regular intervals during exercise, you can become dehydrated. When you are dehydrated, you have a smaller volume of blood circulating through your body. Consequently, the amount of blood your heart pumps with ea...
  • Sodium Soda Compounds Pure
    392 words
    Life could not exist without compounds of sodium. These compounds hold water in body tissues, and a severe deficiency of sodium can cause death. Blood contains sodium compounds in solution. Sodium compounds are used in industry in the manufacture of chemicals and pharmaceuticals, in metallurgy, in sodium vapor lamps, and in the production of hundreds of every day products. One of the most common sodium compounds is table salt, or sodium chloride. In its pure form sodium is a silver-white, soft ...
  • Oxygen Steel Wool
    528 words
    Oxygen content of air Objective: To measure the percent of oxygen in air and the percent of oxygen in an exhale of a breath Hypothesis: Air has more oxygen content in it rather than the exhale of a human breath. Procedure: Wash hands to remove oils Obtain 2 samples of steel wool (. 7 g each) Expose one sample of the wool to 35 mL of vinegar solution for 1 minute Remove the wool from the solution and shake it to remove the vinegar Place the steel wool in a syringe. Put the plunger in the syringe ...
  • Mixture Of Sodium Or Potassium Soap Water Oil
    572 words
    The Two-Faced Detergent Whether soil particles are attached to carpet fibers, wood floors or restroom sinks, they need to be removed. But how is this done? Most of us wipe or scrub a dirty surface with soap and water without a second thought about how they actually work to remove soil. The process of removing dirt begins at the molecular level. In order to understand how soap works, we must first acknowledge what soap actually does. By definition, soap is a mixture of sodium or potassium salts a...
  • Road Salts Sodium Chloride
    304 words
    On Scholar's Day I attended the Environmental Science presentation entitled "The Environmental Impacts of Chemical Deicers and Road Salt." I was required to attend this presentation for my Environmental Issues class as well. The presentation was approximately 25 minutes long and included a powerpoint presentation. In the presentation itself, it stated the impacts of road salts and deicers, the state uses on the roadways during the winter months. The most commonly used road salt is sodium chlorid...
  • Action Potential Membrane Nerve Sodium
    2,001 words
    WHEN the commonplaces of one discipline are applied to an unrelated field, they can prove curiously fruitful. In 1952 two British physiologists, Alan Hodgkin and Andrew Huxley, managed just such a fruitful crossover, applying textbook physics to living tissue. They were both later knighted, and shared a Nobel prize in 1963. The experimental method they pioneered remains fundamental to research into the behaviour of nerve cells. As anyone who has ever had an electric shock knows, electricity has ...
  • Pharmacology Otc Side Effects
    3,094 words
    Running head: OVER-THE-COUNTER DRUGS GROUP PROJECT Over-The-Counter Drugs Project Lyne a Back land Trish Bush Anita Hernandez Katherine L. M. Williams Submitted to Carol Webber, RN, PhD in partial fulfillment of NR 439 Pharmacology Regis University February 25, 2003 Over-The-Counter Drugs Project Part I Go to a supermarket or a pharmacy and examine the over-the-counter (OTC) preparations available on the shelves for "colds,"flue," and upper respiratory infections (URI). Respond to the following ...
  • Calcium Chloride Bag Silicon Reactions
    657 words
    Reactions in a Bag Purpose: The purpose of this experiment is to miss several chemicals in a plastic bag, observe evidence of a reaction, then try to determine which chemicals are responsible for the changes. Materials: o Calcium Chloride o Silicon Dioxide o Bromthymol blue solution o Zipper-close bag o 10 mL graduated cylinder o Sodium hydrogen carbonate o Plastic spoons Class Procedure: 1. Examine each of the materials provided. 2. Blindfold one of the lab partners. This student should hold t...
  • Sodium Thiosulphate And Hydrochloric Acid
    830 words
    Planning What Am I doing? I am trying to do the reaction of sodium thiosulphate and hydrochloric acid, but I am varying the temperature that the sodium thiosulphate is before I add the hydrochloric acid. The test is to see the how long it takes after adding the hydrochloric acid for you not to see the black cross underneath the beaker. Method. To dot his reaction first I must measure out the amounts of sodium thiosulphate and hydrochloric acid. Then I will heat the sodium thiosulphate to the re...
  • The Factor That Affect Rate Of A Reaction
    1,571 words
    The Factors That Affect the Rate of a Reaction Planning: There are different factors which can affect a rate of a reaction such as: o Temperature o Surface area o Concentration o Catalyst Concentration - If the concentration of a solution is increased there are more reactant particles per unit volume. This increases the probability of reactant particles colliding with each other Pressure - If the pressure is increased the particles in the gas are pushed closer. This increases the concentration a...
  • Hydrochloric Acid Mars Rate Fart
    332 words
    The rate of sodium thiosulphate and hydrochloric acid A reaction is: When two chemicals or more mix together to create a new product. A rate of reaction is: the speed in which the chemicals bond together such as rusting is a slow rate of reaction. Introduction This experiment is going to find the rate of sodium thiosulphate and hydrochloric acid. Using different variables. The variables we used were Concentration of the acids Equipment The pieces of equipment we will be using are two beakers, to...
  • Sodium Channel Channels Current Nerve
    888 words
    A Summary: Ion Channels In The Nerve-CellA Summary: Ion Channels In The Nerve-Cell Membrane A Summary: Ion Channels in the Nerve-Cell Membrane In this article, Richard D. Keynes details the workings of ion channels in nerve cell membranes. Nerve impulses (action potentials) are the unit by which information travels in an organism? s nervous system, and the generation of this action potential is dependent on the nerve membrane being permeable to ions which in turn makes said membrane excitable. E...