Name: Date: Graded Assignment Lab Report Answer the questions below. When you have finished‚ submit this assignment to your teacher by the due date for full credit. (5 points) Score 1. Which combinations of substances resulted in a chemical change? Answer: The potassium nitrate and the ammounuiam hydroxide had a chemical change. It started bubbling and getting really foggy. The calcium nitrate and ammonuiam hydroxide did nothing. It’s all clear still‚ but no chemical change. The copper nitrate
Free Chemistry Chemical element Zinc
Abstract In order to experiment with distinct components of a mixture‚ they must be first separated so they can be observed individually. This is accomplished in this lab by the technique called thin layer chromatography (TLC). TLC involves a stationary phase‚ which the TLC plates as well as a mobile phase‚ which could be one of two solvents used: ethanol-acetone for TLC. Dyes in a sample separate consequently because of their unique polarities. As a result‚ nonpolar substances travel further
Premium Thin layer chromatography Chromatography
Introduction Methyl Salicylate has been used for a long time for its pleasant odour and flavour. The objective of this experiment was to carry an organic synthesis; the preparation of salicylic acid from methyl salicylate. To do an organic synthesis‚ it is needed to chemically modify the molecules of another compound to end up with the desire compound. Methyl salicylate is the major constituent of wintergreen oil‚ which is why it was used in this experiment as the starting material. The new technique
Premium Water Organic chemistry Salicylic acid
Lab Report #1 Title: Synthesis of Divanillin Abstract: The purpose of this experiment was to synthesize divanillin. This was done via the oxidative dimerization of two equivalents of vanillin‚ using enzyme horseradish peroxidase as the catalyst. Procedure: Lab Handout: Nishimura‚ R.T.; Giammanco‚ C.H.; Vosburg‚ D.A. J. Chem Educ. 2010‚ 87‚ 526-527. Discussion: Mechanism: Reaction 2 Vanillin H2O2 Divanillin 2 H2O
Premium Molecule Oxygen Atom
each question‚ choose the answer you consider to be the best and indicate your choice on the answer sheet provided. 8807-6501 21 pages © IBO 2007 –2– 1. Which of the following contains only fundamental SI units? A. B. C. D. ampere volt mole kilogram newton second ampere metre N07/4/PHYSI/HPM/ENG/TZ0/XX+ second kelvin kilogram tesla 2. The mass of a body is measured with an uncertainty of 2.0 % and its volume with an uncertainty of 10 %. What is the uncertainty in the density
Premium Velocity Magnetic field Energy
How to do a Deadly EEI in Chemistry Students: These are some hints about the requirements of a high quality Extended Experimental Investigation for the Queensland Senior Chemistry Syllabus. Guidelines given to you by your teacher should take precedence if there is any doubt. They are addressing a Year 12 EEI but will still guide you for Year 11. They refer to a hypothesis-testing EEI. What’s the purpose of an EEI? You‟ll do an EEI to research a question you have about some chemistry-related phenomena
Premium Scientific method Research
Marie Alessandra T. Reyes Group 4 18L Quantitative Determination of the Acidity of Soft Drinks I. Introduction Soft drinks are well known beverages among the young that are consumed mostly for pleasure. These beverages normally contain flavoring‚ sweeteners coloring‚ carbonic acid and acids. Carbonic acid and acids play an important part in the formulation of soft drinks. They enhance the flavor and give a pleasant refreshing ’lift ’ to the drink. The type of acid used can even affect the palatability
Premium Acid Titration Sodium hydroxide
TABLE OF CONTENTS 1. Introduction …………………………………………………….… 2. Literature Review.………………………………………………. 3. Methodology ……………………………………………………… 4. Data Analysis and Interpretation ………………………………. 5. Conclusion and Result ……………………………………………. 6. Bibliography ………………………………………………………. 7. References …………………………………………………………. 8. Annexure ………………………………………………………….. INTRODUCTION Mankind is insecure by nature. Unlike an animal whose requirements do not exceed beyond food for its
Premium Investment
"If you are going to achieve excellence in big things‚ you develop the habit in little matters. Excellence is not an exception‚ it is a prevailing attitude." --Charles R. Swindoll Please use this template to produce the Bi-MTRs by filling the spaces provided. This should be submitted by the 28 th of the relevant month‚ to your Placement Tutor’s e-mail address and to the Business School Employability Office (busemployability@gre.ac.uk). Please make sure you keep copies of your report‚ for submission
Premium Management Leadership Supply chain management
Question 3 (a) The three rules of deductibility that a taxpayer must satisfy before a claim for deduction is given for tax purposes are to satisfy the general deduction test under [S 33(1) of the Income Tax Act 1967]. Under the general deduction test the business expenses have to fulfil all the following conditions in order to secure a deduction from the gross income of a business source: 1) it is revenue expenditure wholly and exclusively incurred in the production of income [S 33(1) Income Tax
Premium Generally Accepted Accounting Principles Expense Operating expense