Introduction to Chemistry Laboratory: A Lesson on Tools‚ Techniques and Measurements PURPOSE: The purpose of this set of experiments (3 total) is to become familiar with the common types of laboratory glassware and equipment‚ and how to obtain and analyze data from these items. LEARNING OBJECTIVES: By the end of this experiment‚ the student should be able to demonstrate the following proficiencies: 1. Know which glassware (beakers‚ burettes‚ pipettes‚ graduated cylinders‚ flasks‚ etc) should
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Chemical Reactions What is a Chemical Reaction? Types of Chemical Reactions Redox Reactions Nonredox Reactions Classifying Reactions What is a Chemical Reaction? A chemical reaction is a process in which the identity of at least one substance changes. A chemical equation represents the total chemical change that occurs in a chemical reaction using symbols and chemical formulas for the substances involved. Reactants are the substances that are changed and products are the substances that are
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Ionic Reactions Abstract This experiment is designed to study the nature of ionic reactions‚ and write net ionic equations for precipitation reactions‚ as well as to identify spectator ions‚ perception reactions and solubility of different compounds. Experiment and Observations In this experiment I was using a 96-well plate to add two drops of the following solutions into seven wells in rows A through E: cobalt (II) nitrate‚ copper (II) nitrate‚ iron (III) nitrate‚ barium
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Balancing Chemical Equations Answer Key Vocabulary: coefficient‚ combination‚ compound‚ decomposition‚ double replacement‚ element‚ molecule‚ product‚ reactant‚ single replacement‚ subscript Prior Knowledge Questions (Do these BEFORE using the Gizmo.) [Note: The purpose of these questions is to activate prior knowledge and get students thinking. Students are not expected to know the answers to the Prior Knowledge Questions.] The scouts are making s’mores out of toasted marshmallows‚ chocolate
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Loreta Grazhees TA: Titas Friday 11:50 - 3:55 February 9‚ 2018 Nitration Of Toluene When reacting Toluene with (NO2+) the end goal is to generate an ortho-‚ para-‚ and/or meta-nitrotoluene. This lab will help guide you in the direction to predict the regioselectivity and activation vs. deactivating powers of the nitro-group. Gas Chromatography will be used to analyze compounds that can be vaporized without being decomposed. GC is also used to check the purity of a substance‚ and separating the
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11/17/2011 The Preparation of Calcium Carbonate Purpose: To create chalk (calcium carbonate) and to find the percentage yield in order to see the amounts of anhydrous sodium carbonate and calcium chloride were used up. Also to see if there’s any alterations like mass differentials. Objectives: 1. To introduce the concept of “limiting factor” in a chemical reaction 2. To practice a. Writing a balanced equation b. Determining the number of moles of each reactant and product
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0 M0.34 MDilute 34 mL of 1.0 M KMnO4 to 100 mL.Copper (II) sulfateCuSO41.0 M0.25 MDilute 25 mL of 1.0 M CuSO4 to 100 mL.Ammonium hydroxideNH4OH1.0 M0. 43 MDilute 43 mL of 1.0 M NH4OH to 100 mL.Sodium carbonateNa2CO31.0 M0.56 MDilute 43 mL of 1.0 M Na2CO3 to 100 mL. Remember‚ you cannot make a solution that is more concentrated than the original solution. Solution Dilutions KEY Directions Using the 100 mL solutions that you just prepared and the formula for
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Abstract This work describes the extraction of caffeine from tea leaves to determine its % caffeine. The extraction process selectively dissolves one or more compounds in a mixture into an appropriate solvent. In this experiment‚ it was visible in the process wherein the components of the tea leaves were dissolved in two solvents‚ water and dichloromethane (DCM)‚ with DCM used for multiple extractions. The organic layer was evaporated and the determined % caffeine was 0.12%. Furthermore‚ the purified
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How Much Gas is Produced? Julie Dang June 23‚ 2013 Purpose The Company ABC Chemical has asked our group to investigate the gas production from a number of various chemical reactions. The company would like us to measure the amount of product we get when we measure the amount of gas from two reactions. We will then compare our data to the predicted amount which will we will calculate based of the Law of conservation of Mass and Ideal Gas Laws. Methods Materials Thermometer CaCO3
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Chapter:-8 The d-and f-Block Elements POINTS TO BE REMEMBERED: --- The elements of periodic table belonging to group 3 to 12 are known as d-Block elements. The general electronic configuration of these elements is (n -1)d1-10 ns 1-2 d- Block elements are collectively known as Transition Elements because properties of these elements vary in between s-Block and p-Block elements. A transition element should have partially filled (n-1) d orbital. Group 12 elements i.e. Zn
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