Red Cabbage Indicator Aim – To create a pH indicator out of a red cabbage solution and to construct a basic pH scale to determine the pH of unknown solutions. Materials - • red cabbage leaves • 250 mL beaker • hotplate or Bunsen burner‚ tripod‚ gauze mat and bench mat • 10 test-tubes – equal size • test-tube rack Methods - Part A: Making the indicator 1. Tear up one or two red cabbage leaves‚ and place them in the beaker with enough water so that the cabbage is just covered. 2. Heat the beaker
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Declaration I‚ the undersigned‚ hereby declare that this is my own and personal work‚ except where the work(s) or publications of others have been acknowledged by means of reference techniques. I have read and understood Tutorial Letter CMNALLE/301 regarding technical and presentation requirements‚ referencing techniques and plagiarism. Signature: Name: Bheki Gumede Student Number: 49292943 Date: 24 February 2014 Witness’s signature: 1 CONTENTS 1 INTRODUCTION 3 2 INCREASED BUSINESS OPPORTUNITIES
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Doctor Jekyll responsible for what Mr. Hyde does? “Man is not truly one‚ but truly two." Have you ever thought of being someone else? Whether it’s a successful entrepreneur‚ actor or sports figure? Robert Louis Stevenson’s novel "The Strange Case of Doctor Jekyll and Mr. Hyde" considered an original classic‚ due to not only the manner in which it’s written but also due to a number of timeless themes consisting of philosophical questions regarding human being. One that is particularly thrilling is
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Daniel Angulo Assessment 01.05 1. What types of tests do you take best? What types of tests are the worst for you? e.g.‚ "I stress out on timed tests." The test I take best are tests on computers. The tests that I do worse on are the timed tests. 2. Why are you taking this course? What types of critical thinking skills or study skills do you wish to improve? Where do you need the most improvement‚ reading‚ math‚ or writing? What types of tests have you taken? e.g.‚ SAT‚ PSAT‚ etc. I’m taking this
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Lesson Summary In this lesson‚ you have learned about King James I and some of the influence he had over the arts and playwrights like William Shakespeare. You will demonstrate your understanding of this lesson by answering research questions and creating a shield for your own coat of arms. Step 1: Research heraldic symbols of the Royal Coat of Arms of King James I and answer the Royal Coat of Arms Investigation Questions in complete sentences. Step 2: Emblazon a shield of your own based on your
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Student Name: Brice Waterman Student ID: 4040913 Date: 09/2/2014 Course and Section Number: SCIN131 Lesson 1 Lab: Laboratory Safety & Differences in Density due to Temperature PART 1 Begin by viewing the following Thinkwell video 15.1.1 CIA Demonstration: Laboratory Safety After you watch the above video‚ check out the safety contract at http://www.flinnsci.com/Documents/miscPDFs/Safety_Contract.pdf and then answer the questions below in sufficient detail: (a) (1 pts) Describe some general
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I Have a dream CHOIR & EVERYONE ELSE I have a dream‚ a song to sing To help me cope with anything If you see the wonder of a fairy tale You can take the future even if you fail I believe in angels Something good in everything I see I believe in angels When I know the time is right for me I’ll cross the stream‚ I have a dream I’ll cross the stream‚ I have a
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can reach a new pH level by interacting with soil. If water has a pH that is too high or too low‚ it can be life threatening to aquatic species and can corrode metal structures. After finding this out‚ I decided to test if water could reach an extreme pH just by interacting with soil around it. The question for this experiment therefore became the following. Will interaction with soil change the pH of water? I hypothesized that if water interacts with soil for three days‚ then the pH of the water will
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This experiment shows the effects of changing the pH level has on Catalase. As predicted‚ the farther away the pH levels got from the optimum pH (7.2)‚ the lower the reaction rate. At a pH of 7.2‚ the foam of the reaction measures 6cm. At a ph of 3 it measures 2.5 cm‚ at a pH of 5 it measures 2.75 cm‚ at ph 9 it measures 2.3 and at 11cm it measures 2cm. pH measures the hydrogen ion concentration of a substrate. By changing the pH of the catalase‚ the enzyme was denatured. Denaturing is the result
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concept and meaning of pH 2. Provide the student experience in measuring pH a. pH testing paper 3. Test the student’s hypothesis as it related to the pH of common solutions Hypothesis The pH of the tested solutions will be in the order of the following according to a pH scale: 1. Lime juice 2. Orange juice 3. Soda 4. Iced Tea 5. Milk 6. Water 7. Soapy water Material Required To facilitate this laboratory exercise‚ the experimenter needs the following: pH strips Sample reservoirs
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