does to the people around you. Transition: Some people who smoke don’t know what’s in them. Body I. Cigarettes have many harmful chemicals in them. A.I am going to name a couple of these chemicals. 1. Cigarettes have acetone in them. a. Acetone is found in nail polish remover. 2. They also have carbon monoxide in them. a. Carbon monoxide is released from the exhaust of the car. 3. There is also butane in cigarettes.
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speed of the object decreases. b. the kinetic energy of the object remains the same. c. the total energy of the object remains the same. d. the potential energy of the object increases. 6. As the speed of a bicycle moving along a level horizontal surface changes from 2 m/s to 4 m/s‚ the magnitude of the bicycle’s: a. total energy remains the same. b. kinetic energy decreases. c. gravitational potential energy remains the same. d. kinetic energy remains the same. 7. Three
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HTC 2 Introduction Heat and temperature are two concepts that often confused. They are related to each other because they are both related to the concept of thermal energy. Thermal energy is the energy that a substance possesses due to the kinetic energy or motion of its molecules. Heat is not temperature. Perhaps the reason the two are usually and incorrectly thought to be the same is because as human beings on Earth our every day experience leads us to notice that when you add heat
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exert energy which later will become kinetic energy when the object is dropped. A lift motor from a roller coaster exerts potential energy when lifting the train to the top of the hill. The higher the train is lifted by the motor the more potential energy is produced; thus‚ forming a greater amount if kinetic energy when the train is dropped. At the top of the hills the train has a huge amount of potential energy‚ but it has very little kinetic energy.
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intermittently to ensure proper interaction between substances. Then it is cooled again to precipitate the product and separate it from some of the impurities. For further purification the product is recrystallized. A solubility test was performed on water‚ acetone‚ and methanol to pick a solvent for this process. For a substance to be optimal for recrystallization‚ the product has to be insoluble at room temperature and soluble at the solvent’s boiling point1. The selected solvent will allow everything to dissolve
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EXERCISE 3: DIFFERENTIAL PROTEIN PRECIPITATION Vanessa Andrea Estepa University of Mindanao‚ College of Science and Mathematics ABSTRACT: Denaturation is the disruption in the original conformation of the protein wherein the secondary‚ tertiary and quaternary structures are all affected. Denaturation is brought about by various kinds of physical and chemical means; this includes the addition of strong acids‚ heavy metal cations‚ alkaloidal reagents‚ salting out and addition of organic solvents.
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Danny Fish 10/9/11 Chemical Testing To identify An Unknown The hypothesis tested was that depending on the solution presented‚ which would test positive for one of the following‚ proteins‚ carbohydrates‚ or lipids through use of chemical testing. (Sudan IV‚ Benedicts’ Solution‚ Iodine‚ Biuret’s) . In order to gain more information for the hypothesis‚ one must know how to test for said macromolecule. Each of the above stated molecules has their own individual solution that will in turn identify
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FEASIBILITY OF PRUSSIAN BLUE POWDER (TINA) AS PIGMENT FOR WHITEBOARD INK An Investigatory Project Presented to the Science Department Paliparan II National High School – Congressional Annex Brgy. Paliparan II‚ Dasmarinas City‚ Cavite By: Hidalgo‚ Briggs Lansang‚ Marinella Ranoco‚ Jessa Lonosa‚ Jamaicah Lumapas‚ Christopher Lawrence March 2014 Acknowledgement Abstract TABLE OF CONTENTS LIST OF APPENDICES Appendix 1. Sample Research Instrument Appendix
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2a: Infrared Spectroscopy and Analgesic Drug Identification Abstract: To be able to understand how organic soluble compounds could be isolated from non-organic components‚ a chromatographic separation process was used. The objective of the analgesic drug identification is to isolate the organic compounds/ active ingredients in an unknown drug. The identity of the drug was determined through melting point‚ percent recover‚ and Rf values. The comparable data for acetaminophen from the manufacturer
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solvent polarity and temperature will also be looked at. Name Structure M.W. M.P. B.P. Density Toxicity Sodium Iodide NaI 149.89 g/mol 661ºC 1304ºC 3.67 g/cm3 Yes Silver Nitrate AgNO3 169.87 g/mol 212ºC 444ºC 4.35 g/cm3 Yes Acetone C3H6O 58.08 g/mol -95ºC 56ºC 0.791 g/cm3 Yes Ethanol C2H6O 46.07 g/mol -114ºC 78ºC 0.789 g/cm3 Yes 1-Chlorbutane C4H9Cl 93.57 g/mol -123ºC 79ºC .88 g/cm3 Yes 1-Bromobutane C4H9Br 137.02 g/mol -112ºC 101.4ºC 1.26 g/cm3 Yes
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