Introduction: The purpose of this lab was to take a variety of solutions and test their pH. Due to materials available pH strips were the only testing tools available. A table is setup to compare the strip color to its pH level. Four known solutions including bleach‚ lemon juice‚ soda‚ and baking soda were used. There was also an unknown solution in which the pH level was used to determine which solution it was. The pH scale is 1-14‚ a pH of 7 is neutral‚ less than 7 is acidic‚ and greater than
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wondered why organic foods are more expensive? Why organic foods are kept separately from the other food in a grocery store? Why some produce has special labels? The food all looks the same on the outside. An apple marked organic looks the same as any other apple in the produce section of the store. The difference is not the outward appearance but how the apple was grown and processed. The word organic gives the impression that the food will be safer and more nutritious to eat than food without the
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electron shells) will have a greater atomic size. An atom with more electron shells is said to have an increased shielding. Example: Potassium (K) is larger than hydrogen (H). This is because potassium has 4 electron shells‚ whereas hydrogen only has 1 electron shell. An alternate way of explaining potassium’s larger size is to say‚ “Potassium has a greater shielding than hydrogen”. The period trend for atomic size is that it decreases across the periodic table‚ from left to right. Sodium is larger
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Title Page A COMPARISON FOR THE BETTER FISH PRESERVATIVE BETWEEN SUGAR AND SALT IN PARTIAL FULFILLMENT OF THE REQUIREMENTS IN CHEMISTRY III FOR SCHOOL YEAR 2011 – 2012 Grace Christian Rubillos Rosemarie Dianne P. Japlos Izzadyl Louise Blateria Vincent Anthony Elizaga James Emmanuel Lumapas RESEARCHERS Rosaminee B. Sanchez ADVISER Acknowledgement The researchers would like to express their gratitude to Mrs. Marcelina Rubillos‚ Grace’s great-grandmother‚ who has contributed valuable information
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How do Food Preservatives affect the growth of Microorganism? | By: Aya Zbedah | | December 15‚ 2008 | | Mrs. Hafell 5th Period Biology | 2008-2009 | | Abstract How Food Preservatives affect the growth of Microorganisms? Aya Zbedah Ballard High School The purpose of this project is to see which preservative will either slow down the growth of bacteria or speed up the growth using the three most common preservatives: sugar‚ salt and‚ vinegar. Humans usually have a problem keeping their
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Food Chemistry: Option F Food Groups: F.1 Food & Nutrients Food: any substance‚ whether processed‚ semi-processed or raw‚ which is intended for human consumption‚ and includes drinks‚ chewing gum and any substance which has been used in the manufacture‚ preparation or treatment of “food” but does not include cosmetics or tobacco or substances used only as drugs. Nutrients: any substance obtained from food and used by the body to provide energy‚ to regulate growth‚ and to maintain and repair
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The chemical processes that take place inside food determine its nutritional value‚ taste‚ texture and freshness. Like any other organic material‚ food can decompose over a period of time. The importance of food chemistry lies in its ability to counter the effects of decomposition and spoilage and extend the shelf life of foods. Food chemistry is a science that studies the chemical processes that take place in food. All food products are made of biological materials that react and interact in different
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PH at the UN Alfredo Vidal Ceballos 7/10/2014 Group Support Part 1: Solution Group Name and M. cons. Chem formula Type Experimental pH 1 Deidre Acetic Acid 0.1M HC2H3O2 Weak Acid 3.03 3.03 2 Acetic Acid 1M HC2H3O2 Weak Acid 2.59 2.54 3 Hydrochloric Acid 0.5M HClStrong Base 0.85 0.90 4 Jonah Nitric Acid 0.1M HNO3 Strong Acid 2.14 2.14 5 Sodium Acetate 1M NaC2H3O2 Weak Base 9.42 9.42 6 Potassium Dihydrogen Phosphate 0.1M KH2PO4 Weak Acid 5.47 5.47 7 Andy Potassium Hydrogen Phosphate 0
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Experiment Four: Organic Synthesis of Aspirin Abstract The purpose of this experiment is to synthesize a common organic product called acetylsalicylic acid (aspirin)‚ and to become familiar with the optimum conditions needed for successful yields. Aspirin is produced from an acid catalyzed reaction between salicylic acid with acetic anhydride. The crystalline aspirin is synthesized and purified by recrystallization‚ although there is not a hundred percent yield due to sources of error. Introduction
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The research of organic food Yining Wang— Victoria Northwood University 2011/12/01 The research of organic food Organic foods are foods that are produced without using modern synthetic inputs such as synthetic pesticides and chemical fertilizers. (Wikipedia‚ 2011‚ para. 1). Some people think organic foods are healthier than the traditional foods‚ some people oppose this opinion. The most important difference between organic foods and traditional foods is the farming method. The different
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