LAB REPORT Introduction: In a chemical change‚ the identities of substances change and new substances form. In an equation the substances on the left are the reactants. The substances on the right are the products. In this experiment the objectives are to observe evidence that a chemical change has taken place. Infer from observations that a new substance has been formed. Identify and record observations that show energy is involved in chemical change observe the color‚ solubility of some substances
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Chemical Reactions Lab Objectives: 1. To examine a variety of reactions including precipitation‚ acid-base‚ gas forming‚ and oxidation-reduction reactions. 2. To identify the products formed in these reactions and summarize the chemical changes in terms of balanced chemical equations and net ionic equations. 3. To identify the species being oxidized and reduced in oxidation-reduction reactions and determine which species is the oxidizing agent and the reducing agent. Chemical equations represent
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Density (Linearized plot) TA: Blue Rex rex Group Members: Billy and Mandy Tuesday; 1200-1350 Abstract: In this lab the density of hand-made clay balls were calculated to understand how scientists model physical effects and to understand logarithmic plots. The hand-made balls ranged from diameters of 2cm to 6cm and were measured with vernier calipers by each member of the group. A total of 6 independent measures of each diameter were taken to establish uncertainty. The clay balls were then
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of Engineering (Hons) (Chemical Engineering) JULY 2009 Universiti Teknologi PETRONAS Bandar Seri Iskandar 31750 Tronoh Perak Darul Ridzuan ABSTRACT The objective of this project is to optimize the preparation of modified Calcium Oxide (CaO) to capture CO2 by carbonation through hydration of ethanol/water. The carbonation reaction is the basis for CO2 capture systems. However CaO as regenerable CO2 sorbents in industrial processes is limited by the rapid decay of the carbonation
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Laurence BonJour is an American philosopher who is best known for his work in epistemology. In his work‚ “Can Empirical Knowledge Have a Foundation‚” he argues against foundationalism by and ultimately concludes that “strong foundationalism is untenable as a solution to the regress problem” (6). He explores externalism‚ a view that holds that rational explanations are found through observing objective features that exist in the world; as well as givenism‚ the view that one can understand facts without
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isotopes of each element is listed on the periodic table. Part B - Multiple Choice D A 1. A(n) __ is used to represent a compound. a) symbol b) equation c) subscript d) formula 2. ___ atoms or groups of atoms are called ions. a) charged b) diatomic c) neutral d) monatomic A 3. For the formula of a compound to be correct‚ the algebraic addition of the charges on the atoms or ions in the compound must add up to __. a) zero b) one c) two d) four D 4. Potassium bromide
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Activity Series for Metal Copper (II)‚ Magnesium and Nickel Tong Wu Question: “What is the effect of solution type and metal type on metal reactivity as measured by whether a chemical reaction has taken place? ” Prediction: *Using metal magnesium as an example illustration I. (Magnesium reacts with lead (II) nitrate) Mg + Pb(NO3)2 Pb + Mg(NO3)2 II. (Magnesium reacts with zinc nitrate) Mg + Zn(NO3)2 Zn + Mg(NO3)2 III. (Magnesium reacts with iron (III) nitrate) 3Mg + 2Fe(NO3)3
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Chemical Changes Lab Question: How do you distinguish a physical and chemical change? Hypothesis: If we use these materials and use magnets‚ water‚ burners‚ and filters on the mixtures and elements given we should determine what kind of effect these materials given will have on these mixtures and elements‚ physical or chemical. Procedures: -Part A: Record all observations of Part A in Data Table 1 1. Label each substance on seven pieces of paper. Put two pieces of magnesium ribbon on the
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Melissa Kenney Dr. Braun/Lab K Lewis Symbols & Structures Purpose The purpose of this lab experiment is to practice writing Lewis symbols for elements and monatomic ions while writing Lewis structure for molecules and polyatomic ions. I will also be writing chemical equations using Lewis structures for
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SUS1501 assignment2 1. State your proposed ac as maxim: “I will take ZAR 620 000 000. 00 (A) when I have done a year’s work (C) in order to get really‚ really rich (E).” 2. Restate this maxim as a universal law: “All people (7 billion of them) will take ZAR 620 000 000. 00 when they have done a year’s work in order to get really‚ really rich.” 3. Ask whether your maxim is conceivable in a world ruled by the universal law: In a world where all 7 billion people earned ZAR 620 000 000.00‚ everything
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