Non-polar covalent bond Electronegativity difference between 0.3-1.7 = Polar covalent bond Electronegativity difference greater than 1.7 = Ionic bond 3. What type of bonding would be expected between the following atoms? a) Li and F = ionic b) Cu and S = polar-covalent c) I and Br = polar-covalent Translation: Non-polar covalent bond – the electron pairs that make up the bond are “hanging out” right in the middle of the two atoms Polar covalent bond – the electron pairs that make
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of Experiment: Observation of Chemical Changes Purpose: To examine the reaction of common chemicals from household consumer products‚ and the changes they undergo. Procedure: After combining the chemicals listed below in Data Table 1‚ I observed the mixture against white and dark backgrounds by slipping white and black paper underneath the well plate. For every reaction‚ I wrote down the chemical combination‚ the well number‚ and my observations of the chemical reactions against the white and
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Why should we opt for hepatitis B vaccination? Introduction Hepatitis B is a major global health problem. Hepatitis B is a viral disease which selectively damages liver. It is estimated that over 2 billion people worldwide had been infected with hepatitis B virus (HBV) and 3-5 % of Indian population is infected with HBV. Chronic HBV infection can progress to cirrhosis (advanced irreversible liver disease) and is a leading cause of Liver cancer. Most patients with chronic HBV infection will not develop
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Significant chemical waste is generated from the labs on campus: 1. To find out how are these chemicals disposed. 2. To suggest what is the optimum way of disposing them. 3. Identification of the risks involved. Contents 1. PROJECT OBJECTIVES……………………………………………1 4. INTRODUCTION…………………………………..........................5 4.1 Waste…………………………….……………..........................5 4.2 Chemical Waste……………………………………………….6 4.3 Hazardous Chemical Wastes…………………………….7 4.4 Non-Hazardous Chemical Wastes………………
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Abstact 1) Introduction An adulterant is a chemical substance which should not be contained within other substances‚ such as food‚ beverages‚ fuels‚ for legal or other reasons. The addition of adulterants is called adulteration. The word is appropriate only when the additions are unwanted by the recipient. Otherwise the expression would be food additive. Adulterants when used in illicit drugs are called cutting agents‚ while deliberate addition of toxic adulterants to food or other products
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Physical and Chemical Properties Chem 107 6-4-2013 A pure substance or chemical substance is a material that is homogeneous. It has consistent properties throughout the sample.” Pure substances can be described by both physical and chemical properties”. Physical properties can include‚ color‚ odor‚ melting point‚ boiling point‚ and solubility in various solvents‚ etc. The observation of these physical properties does not involve any chemical change in the substance‚ it is still the same
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Chemistry Laboratory Report Classification of Chemical Substances Student: Saule Sadykova Lab Partner #1: Temirlan Atambaev Lab Partner #2: Almas Ospanbekov Instructor: Eugene Douglass Nazarbayev University Purpose The aim of this experiment is to investigate the properties of several substances with the purpose of determining whether they are molecular‚ ionic‚ macromolecular or metallic. Introduction Chemical substances could be named ionic‚ molecular or metallic substance‚ based
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Hanover-Bates Chemical Corporation Analysis Sales Management June 10th‚ 2012 Hanover-Bates Chemical Corporation Sale Management Analysis The Hanover-Bates Chemical Corporation is a company who produces processing chemicals for the chemical plating industry. James Sprague was promoted to the northeast district sales manager for the company. Sprague sales experience was approximately 4 years which 2 were spent assisting the national sales manager. The team he will manage has a significant
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Observation of Chemical Reactions Objective: This experiment is meant to show how certain chemicals react with each other and can be identified by these reactions Procedure: Several different chemical mixtures were poured into the well plate and observed. These included sodium bicarbonate and hydrochloric acid‚ bromothymol blue and hydrochloric acid‚ ammonia and bromothymol blue‚ hydrochloric acid and blue dye‚ blue dye and sodium hypochlorite‚ potassium iodide and lead nitrate‚ sodium hydroxide
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Energy‚ often in the state of heat‚ is involved in chemical reactions and phases changes. Changes in energy‚ can translate in temperature differentiations. In such a case‚ energy is transferred as heat. The quantity of heat exerted in a reaction referred to as (joules) can be identified through the following equation: Heat Exerted= (Mass of Sample) x (Specific Heat) x (Change in Temperature) q=msΔT Within a calorimeter is where the reactions within this lab take place. A calorimeter allows the
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