• Beet Lab Test Tube
    832 words
    MATERIAL AND METHODS Stability of cell membrane using pHF or the lab experiment for testing the stability of beet cell membranes using pH, many materials were used as follows. Obtaining a beet we punch out cores, using a cork borer. After washing the cores we put each one inside a separate test tube, and added a different pH solution in each one. After 3 minutes in these exposure solutions, we took the beet out with a dissecting needle. Then transferred each beet to a separate test tube contain...
  • Fermentation Test Tube
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    Planning PROBLEM TO BE INVESTIGATED Yeast enzyme specificity: Specificity of Brewers and Bakers yeast enzymes to different sugars (being monosaccharides) HYPOTHESIS I predict Bakers yeast to have a different enzyme specificity compared to Brewers yeast where more CO 2 is produced at 37 0 C. BACKGROUND KNOWLEDGE Fermentation is the breakdown of sugars by bacteria and yeast using a method of respiration without oxygen (anaerobic respiration). It involves a culture of yeast and a solution of sugar,...
  • England's First Test Tube Baby
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    England s Test-Tube Baby The first baby to be conceived outside of it s mother promises to usher in a new and maybe, a revolutionary era of human reproduction. In July, Lesley Brown was getting close to delivery. This was said to be the world s first test-tube baby at the Oldham and District General Hospital, 190 miles outside of London. The infant was created when the egg of the mother was joined with the father s sperm in a special culture medium prepared by gynecologist Patrick Steptoe of Old...
  • Carbon Dioxide Yeast Dough Experiment
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    Biology Lab Report Investigating Alcoholic Fermentation and the Affects of Yeast on Dough Aim: The aim was simply to investigate whether or not yeast had any affect on causing dough to rise when baked and to experiment with alcoholic fermentation eg. to see if it gave off carbon dioxide. Introduction: Following a few weeks of fermentation theory, groups of three to four were assigned and told to conduct a series of experiments involving the affects of fermentation. My group consisted of myself, ...
  • Test Tube Water Thermometer Wire
    492 words
    Question: What is the solubility curve of KNO 3 Prediction: Draw a sketch to show the shape of the curve you expect for the solubility of a typical solid dissolving in water at different temperatures. Plot solubility on the y-axis and temperature on the x-axis. Materials: Large test tube Balance Stirring wire Two-hole stopper to fit the test tube, with a thermometer inserted into one hole 400 mL beaker graduated cylinder or pipette or burette hot plate or Bunsen burner with ring clamps and wire ...
  • Test Tube Put Flame Hcl
    479 words
    I Purpose: Observe chemical reactions and ID reactants and products of the reactions. Classify the reactions and write balanced Equations. II Theoretical Background: A chemical reaction is a what happens to components that causes a physical change. III Hypothesis: You can determine a chemical rxn by the physical change that takes place. IV (A) Equipment: Burner, wood splints, crucible tongs, micro spatula, test tubes 7, test tube holder, test tube rack, sandpaper, evaporating dish, safety goggl...
  • Zinc And Hydrochloric Acid
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    Zinc and Hydrochloric-Acid Written By Kahlil ZioneDate: 02/02/05 Abstract: We observed the reaction between zinc and hydrochloric acid and recorded it in a table and learned wether the percentage of zinc is effected by the amounts of both substances added to the solution. Introduction The purpose of this experiment is to determine if the amount of zinc and hydrochloric acid will effect the percentage of the zinc in the out coming solution. We are reacting zinc metal with hydrochloric acid to pro...
  • Test Tube Tubes Solution Drops
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    Problem: How are carbohydrates identified as a monosaccharide? Hypothesis: I predict that when we add the Benedict's solution to the different types of saccharides and then boil it we will most be able to determine all the information the we need to accumulate to record data resulting in the conclusion for the Benedict's solution. I always plan to see the addition of the Iodine work wonders in its own way. Both ways will help us determine factors with the unknown and known carbohydrates. I also ...
  • What Are Proteins Food Product
    459 words
    Proteins are a unique compound which contain certain atoms in a one of a kind structure. To start proteins are the building blocks that make animal tissue. Next, proteins are in the organic compound group. This means that a protein compound contains carbon as one of its base atoms. To continue, a protein is not just one structure of atoms but at least 200. These structures individually are known as amino acids. Twenty different kinds of amino acids are known to exist and each kind of protein ha...
  • Effects Of Salt On Freezing Point Of Water
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    Blank 1 Blank ity BlankBlankity Blank Mr. Blank 4/9/02 Effects of Salts on the Freezing Point of Water In this experiment, you will study the effect that several solutes have on the Freezing Point of water. When a solute is dissolved in a liquid, the temperature at which that liquid freezes decreases, because the molecules of the solute become attached to the water molecules, making it more difficult for the water to form its crystalline shape and form into ice. This process is called Freezing P...
  • Unknown Solution Ions Turns Test
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    Qualitative Analysis of Cations Introduction: The purpose of this experiment is to demonstrate the separation and identification of metal ions based on the insolubility of certain salts. The solubility rules should be taken into account. If a solution dissolves in water, the result contains both cations and anions. Analyzing different ions to discover their nature is the main goal of this experiment. Separation of the cations by testing the differences in solubility of different metal salts is d...
  • Test Tube Water Color Turbidity
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    Introduction During lab on Monday, April 9, 2002 our class conducted a lab on water chemistry and pollution. The two bodies of water that were choose as samples where, the Wall pond and the HGTC pond. Each group had to test the water for Temperature, Dissolved Oxygen, Nitrate, Phosphate, pH, and Turbidity. Only two people where chosen to test the waters for Coliform bacteria. "Coliform bacteria are not pathogenic (disease causing) organisms, and are only mildly infectious. For this reason these...
  • Freezing Point Of Naphthalene
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    Freezing Point of Naphthalene. Purpose To determine the freezing point of a known substance, naphthalene II. Materials ring stand gas source test tube test tube clamps thermometer naphthalene Bunsen burner goggles hose stopwatch III. Procedure 1. Assemble the Bunsen burner, attaching one end of the hose to the burner and the other to a gas source. 2. Assemble the ring stand so that a ring clamp is attached to the stand holding the test tube that will be used in the experiment. 3. Fill the test ...
  • Test Tube Substance Litmus Paper
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    What is in each test-tube? What proof do I have of this? Test-tube A: Test-tube A had water in it. I can base this on the fact that it was a neutral, reacting neither to red or blue litmus paper. Phenolphthalein also did not react to this substance. The pH value was 7, neutral, also adding to the proof that this substance was water, because water is neutral. The substance was clear and odorless, and all of these reactions combined led me to my conclusion of substance A being water. Test-tube B:...
  • Test Tube Solution Fescn Scn
    422 words
    Work to be done: By experiments find out how chemical equilibria works. Chemicals and apparatus: Two beakers Five test-tubes Kaliumtiocyanat, KSCN 0. 002 M Kaliumtiocyanatsolution, KSCN + H 2 O Dinatriumfosfat, Na 2 HPO 4 0. 002 M Iron (III) nitratesolution, FeNO 3 0. 2 M Silvernitratesolution, AgNO 3 Lab: Lab 1 One test-tubes is filled half of distilled water (A) and another with kaliumtiocyanatsolution (B). Both solutions are colorless. Solution (B) contains SCN-. I add five drops of iron (II...
  • Paper Chromatography Test Tube
    1,142 words
    Paper Chromatography Introduction: Paper chromatography is used to separate and identify pigments and other molecules from cell extracts that contain complex mixtures of molecules. In 1903 Michael Tw sett invented this technique. In 1944 Martin and Synge, who went on to win the Nobel Prize in 1954 for their work, perfected it. Paper chromatography was used by Melvin Calvin to separate the order of photosynthesis, and Fred Z anger to find out how to make insulin by determining what orders to put ...
  • Creatinine Test Tube
    1,279 words
    Experiment showing the determination of Creatinine concentration in 24-hour urine samples. Aim: The aim of the practical is to test the following hypothesis: The amount of creatinine found in a persons 24-hour urine sample bears a direct relationship to the body mass of that person. METHOD: Materials: 1) 5 urine samples of unknown concentration numbered 1, 5, 6, 7 ad 8. 2) Picric Acid 3) 0. 75 M Sodium Hydroxide 4) P 1000 Gilson Pipette 5) 1 cm 3, 5 cm 3 and 10 cm 3 glass pipettes 6) Vortex Mix...
  • Melting Point Compound Solvent Test
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    Determination of Melting Points of Benzoic Acid and Benzamide and Composition Diagram of Their Mixtures PURPOSE: The purpose of this experiment is to determine the melting point of benzoic acid and benzamide and make a composition diagram for the mixtures of benzoic acid and benzamide to determine the eutectic point of the mixtures. The melting point of the given unknown will be determined using the melting point apparatus. Pure chemicals such as benzoic acid and benzamide alone have a set melti...
  • Test Tube Equilibrium Potassium Chloride
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    Experiment 36 Disturbing Equilibrium Aim: To observe the effect of a change in conditions on a system at equilibrium and explain the effects observed through Le Ch^atelier's principle. Equipment: 5 medium test tubes 1 test-tube rack 1 100-mL beaker 1 250 mL beaker 1 dropper pipet 1 spatula 1 50-mL graduated cylinder 1 white card, to record Materials: Saturated potassium nitrate solution, KNO 3 0. 1 M Iron (III) chloride, FeCl 3 0. 1 M Potassium thiocyanate, KSCN Potassium chloride crystals, KCl ...
  • Investigating Hard And Soft Water
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    INTRODUCTION: Water that contains calcium and magnesium ions is called "hard water" because calcium and magnesium ions can combine with other ions and compounds to leave a hard scale on the surfaces they touch. Hard water may be a troublesome in household water supplies. Fortunately, there are simple solutions to hard water problems. Hard water can be softened by the removal of metallic ions responsible for the hardness. This is known as water softening. Softened water is desirable in the bathtu...