Observations of Chemical Changes Observations from Procedures Well#/ Question Chemicals Reaction A NaHCO3 and HCl-CO2 Bubbles B HCl and BTB Turns Orange C NH3 and BTB Still blue- no change D HCl and blue dye Turns green E Blue dye and NaOCl Stays blue – no change F NaOCl and KI Turns pale orange/yellow G KI and Pb(NO3)2 Milky yellow solid H NaOH and phenolphthalein Turns bright pink I HCl and phenolphthalein Bubbles- cloudy J NaOH and AgNO3 Solid formed/ turned brown K AgNO3 and NH3 No change
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ZOOL 1 Lecture 3 1 2 ¡ ¡ ¡ ¡ Chemical substances that cannot be broken down to simpler forms by ordinary chemical reactions Atom Atomic number Atomic mass Compound Molecule Macromolecule 3 ¡ ¡ ¡ ELEMENT Oxygen Carbon Hydrogen Nitrogen Calcium Phosphorus Potassium Sulfur
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Lab #5 Chemical Reactions & Balancing Equations Objectives Observe and classify several chemical and physical changes. Give evidence for the occurrence of a chemical reaction. Write a balanced equation for a chemical reaction. Identify a reaction as a combination‚ decomposition‚ replacement‚ or combustion reaction. Background Physical properties can be observed without changing the chemical composition of the substance. Common physical properties that can be measured without changing the chemical
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FINAL SPEECH (Persuasive Problem-Solution) Purpose: To inform and persuade your audience that a specific problem exists‚ it is serious‚ and it affects them. Time: 6-8 minutes Topic: Choose a topic that interests you and would probably interest your audience (the class). Consider what your audience already knows about this topic and what their attitude about this topic will be. Do not choose something the audience already knows a lot about. This topic must be presented in a persuasive
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Running head: SUSTAINABLE SOLUTIONS 1 Sustainable Solutions Paper Katherine Kem DBA Strategy Dr. Robert Hockin‚ Instructor February 21‚ 2010 Running head: SUSTAINABLE SOLUTIONS Sustainable Solutions Paper Walmart has some of the best supply chain methods in the market‚ and is working to become an industry leader in sustainability. Despite this‚ there is much criticism of this ‘giant’‚ and an in-depth look of their organization from a sustainable lens will review their successes‚ failures
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Preventing Chemical Accidents Introduction to Process Hazard Analysis First Edition Process Safety Management Training from the NJ Work Environment Council EMBED PBrush This material was produced under grant SH-17813-08-60-F-34 from the Occupational Safety and Health Administration‚ U.S. Department of Labor. It does not necessarily reflect the views or policies of the U.S. Department of Labor‚ nor does mention of trade names‚ commercial products‚ or organizations imply endorsement by the U
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Introduction: A chemical reaction is formed of reactants and products. Reactants react with each other to give one or more product. Sometimes we can visualize observations that are characteristic of the reaction. Like for example a release of a gas (bubbles are formed) or a change of color or also the formation of a precipitate. Materiel needed: Test tubes Rack of test tubes Plastic droppers Beakers Procedure: We prepare 7 beakers of 7 different solutions (that we mark from 1→ 7)
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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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Case 22: Victoria Chemicals The Merseyside Project Table of Contents Executive Summary 3 Problem Statement 3 Key Decision Criteria 4-5 Data Analysis 5-6 Alternatives Analysis 6-7 Recommendations 8 Action and Implementation Plan 8-9 Exhibits 10 References 11 Executive Summary Victoria Chemicals is a major competitor in the worldwide chemicals industry. They are a leading producer of polypropylene‚ which is a polymer used in products such as: medical products and carpet fibers.
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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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