BIOL 140 Lab—The Chemical Composition of Cells Name ____________________________ I) Introduction All cells contain four major types of macromolecules: carbohydrates‚ lipids‚ nucleic acids‚ and proteins. In today’s lab‚ we will be studying three of the four-proteins‚ carbohydrates and lipids. Various chemical tests can be used to detect the presence of each of these molecules. Most of the tests involve a color change visible to the eye. If a color change is observed‚ the test is considered positive
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Physical & Chemical Properties Data Table 1: Solubility or Reaction Substance Name Color Odor Effect of Heat Cold Water Hot Water Litmus test Dilute HCl Dilute NaOH Mg Silver None None None None Base Fizzes‚ gas‚ increased temperature None Cu Brown None None None None Base None None Zn Silver None None None None Base Fizzes None MgO White Slight odor None None Bubbles Base Dissolves‚ turns yellow‚ increased temperature None CuCO3 Green None Melts
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Case 22: Victoria Chemicals The Merseyside Project Table of Contents Executive Summary 3 Problem Statement 3 Key Decision Criteria 4-5 Data Analysis 5-6 Alternatives Analysis 6-7 Recommendations 8 Action and Implementation Plan 8-9 Exhibits 10 References 11 Executive Summary Victoria Chemicals is a major competitor in the worldwide chemicals industry. They are a leading producer of polypropylene‚ which is a polymer used in products such as: medical products and carpet fibers.
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DELIGHT IN DISORDER INTRODUCTION: Robert Herrick (1591-1674) is classified as a ’Cavalier Poet‚’ that is‚ he belonged to a group of poets who supported King Charles I during the Civil War. During the Civil War on account of his support to the Royalist cause he fell out of favor with the government‚ but after King Charles II was restored to the throne the King honored him and made him the Vicar at Dean Prior at Devonshire. During his student days at Cambridge and as a budding poet he was a great
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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 hydrochloric
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Jeanne Yoo|Date: 07/15/13| Exp 1: Observations of Chemical Changes|Lab Section: 1411-76426| Data Tables: Part 1: |Chemicals|Well No.|Observations of the Reaction| A.|NaHCO3 + HCl|1 |clear bubbles formed| B.|HCl + BTB|2 |turned orange after BTB was added‚ transparent‚ acidic| C.|NH3 + BTB|3 |turned dark blue after BTB was added‚ opaque‚ basic| D.|HCl + blue dye| |blue dye was missing from kit| E.|Blue dye + NaOCl| |blue dye was missing from kit| | with the 1 drop of HCl| || F.|NaOCl +
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and Chemical Properties Purpose: To investigate the chemical properties of pure chemical substances. To investigate the physical properties of pure chemical substances. Procedure: For this lab we used four test tubes and poured equal amounts of a substance in each test tube. We then observed the color and odor. We then heated the substance and recorded the observation. The next tube we added cold water and observed the effects‚ then we heated it and observed the effects. Drops from that
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QUIZ NO. 2 : RESPIRATORY DISORDERS DIRECTION: Select the best answer by encircling the corresponding letter. 1. The patient is recovering from a left partial lobectomy. Which of the following nursing actions is most likely to result in the positive re-expansion of the affected left lung? a. Positioning the patient in a right side-lying position b. Encouraging the patient to deep breathe and coughing every hour c. Regularly assessing the patient’s ability to inhale and exhale comfortably d.
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bonds formed between two ions by the transfer of electrons. The speed at which a chemical reaction proceeds is known as the rate of reaction. The rate of almost every reaction can be increased or decreased due to different factor. Scientists have identified five factors that affect the rate of reaction. The five factors are temperature‚ concentration of the reactants‚ surface area‚ agitation (mixing)‚ and catalyst (chemical helpers). The collision theory states that the rate of a reaction is directly
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Experiment In this lab we were asked to observe changes and colors when mixing two or three chemicals together. The actual experiment itself used twelve different pipits and three chemicals I selected from my house. To begin‚ I first gathered everything‚ including the 96 well plate‚ 24 well plate‚ goggles‚ and gloves along with the observations of chemical changes bag. I set it up all on the the kitchen table that had paper towels on it. Next‚ I made my data table so that I could record my reactions
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