Physical Properties of Organic Molecules Abstract Identifying the physical properties of compounds can be useful in several ways. It helps us to determine the structure of certain compounds‚ the purity of substances and if a substance is not pure we can figure out how to separate contaminating substances from a compound. In this experiment‚ I learned how to determine a solid’s melting point and why some melting point ranges may be broader than others.
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Physical and Chemical Reactions Lab #4 Alesa Cannon Objective: To investigate the physical and chemical properties of a pure chemical substance. Procedure: 1. Half-fill one well of a 24-well plate with 6 M HCl and half-fill a second well of the 24-well plate with 6 M NaOH. Suck up these chemicals into their labeled pipets for later use. 2. Perform the following steps on each of the substances to be tested. Complete all tests of one substance and record your observations before proceeding
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Purpose: To investigate the difference between physical and chemical changes in matter. Materials: Safety glasses 13 small test tubes Test tube rack Test tube holder 2 100-mL beakers Funnel Watch glass Stirring rod Evaporating dish Magnet Magnifying glass Crucible tongs Spatula Balance Meeker burner Ring stand Iron ring Wire gauze Forceps Sulfur Iron filings Sodium Bicarbonate Sodium Chloride Sugar Sand Magnesium ribbon Hydrochloric Acid Distilled water Filter paper
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How do the unique chemical and physical properties of water make life on earth possible? Heat Capacity the amount of energy required to raise the temperature of something one degree celcius Cohesive strength - The internal strength of the adhesive. The measure of a label’s resistance to removal. Surface Tension - the attraction of molecules to each other on a liquid’s surface‚ creating a barrier between the air and the liquid. Heat of Vaporization the
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THE CLASSIFICATION OF CHEMICAL REACTIONS Danny Bhatt SCH3U0-G Mr. Gandhi Wednesday‚ April 1st‚ 2014 INTRODUCTION The purpose of this lab is to determine the different types of chemical reactions and differentiate between them based on similar characteristics of each set category. In this lab it is hypothesized that every chemical reaction which was observed would fall under already set categories (that are: synthesis‚ decomposition‚ single displacement‚ double displacement‚ combustion and
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Chemical Changes VS Physical Changes Lab Report (Full Name) 3rd period Purpose: To observe the difference between chemical and physical changes. Materials: * * Hot plate * Water * Salt * Evaporating dish * Candle * Matches * Ammonium hydroxide * Watch glass * Phenolphthalein * Paper towel * Cornstarch * Iodine * Cup * Alka-Seltzer tablet * Pipet * Milk * Vinegar * Copper II sulfate * Lead II nitrate Safety:
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Stazi Belvin Chemical and Physical Lab Changes Lab Report 9/5/2014 I. Purpose- The overall purpose of the lab is to identify chemical and physical changes. II. Safety- To work with the chemicals used in the lab‚ it is required to wear safety goggles to protect your eyes from the fumes when working with the chemicals. It is also required to be cautious when working with the acids used in this lab because they can cause burning and irritation of the skin. Also‚ be cautious as to not inhale the
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Friction Peter Jeschofnig‚ Ph.D. Version 42-0262-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information
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Identifying Physical and Chemical Changes Nelson Science Perspectives 10 section 5.2 Amazing Student September 17‚ 2012 Mrs. Volkmann SNC 2D Purpose: To collect evidence and then use it to identify physical and chemical changes. Hypothesis: I predict the following: Change 1 will be a chemical change Change 2 will be a chemical change Change 3 will be a physical change Change 4 will be a chemical change Change 5 will be a chemical change Change 6 will be a physical change Materials:
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Jordan Toschak Kevin Hannon and Megan Blanford Physical Properties of Clusters of Galaxies Monday (4/15/2013) Procedure For this experiment‚ a photograph of the Virgo Cluster of Galaxies will be needed to observe. The photograph will be sectioned into specific areas with coordinates like a map. Locate the area and identify the galaxies. Classify the galaxies as elliptical‚ spiral‚ or irregular. An elliptical galaxy will appear solid with not real defined “arms” or spirals coming from the
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