Student Name: Melissa Tatum Student ID: 4593119 Date: 7 Dec 2014 Course and Section Number: SCIN131 A004 Fall 14 Lesson 4 Lab: Chromatography and Ionic versus Covalent Bonds PART 1 Begin by viewing the following Thinkwell video 15.1.3 CIA Demonstration: Chromatography After you watch the above video‚ answer the questions below in sufficient detail: (a) (3 pts.) This video discusses 3 different types of chromatography. List each one mentioned‚ and describe their differences in as much detail
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Purpose Determine which kinds of reactions involve electron transfer as the driving force. Background Redox (reduction-oxidation) reactions include all chemical reactions in which atoms have their oxidation state changed. So‚ when a metal and a nonmetal react‚ there is an ionic bond formed‚ which means one of them loses electrons while the other gains them. Since this reaction involves the exchange of electrons it is termed as a redox reaction. The oxidation states in a metal- nonmetal are simple
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Introduction The purpose of this lab is to be able to observe the reaction rates of different chemical substances‚ by looking at which substance is the fastest reactant. This is what chemical kinetics is. Reaction rate is the change in the concentration of a reactant or product in a chemical reaction per unit time. In this lab the requirement was to be able to calculate each Average reaction rate which is the change in reactant or product concentration at a given time interval. Some equations that
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Ted Legdeto Mark Maguire 10/15/13 Period G Observation and Experiment Lab Objective: To make observations about the changes that occur when several substances are mixed and to design controlled experiments to identify the substances responsible for the observed changes. Materials: We did not use graduated cylinders or beakers. Apparatus Expendables Wash bottle Pen for labeling Jars or plastic cups‚ small‚ 2 Sealable‚ zipper-lock plastic bags‚ quart size‚ 6 Measuring spoons
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Name Lab Partner Name(s) Thermodynamics‚ Enthalpy of Reaction Lab March 27‚ 2014 I. Purpose The purpose of this lab is to learn how to determine the heat of reaction. II. Safety 1. Wear appropriate safety attire (goggles‚ aprons‚ hair tie‚ etc.). 2. Do not directly inhale or ingest chemicals. 3. Understand safety information regarding the chemicals being handled during the lab (hydrochloric acid‚ sodium hydroxide). 4. Be aware of how to operate all lab equipment. 5. Clean hands
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Chemistry Lab Report Jeffrey Kenneth Bangero Introduction Firstly we calculated the mass of the beaker and then we put the assigned grams of sodium carbonate and calcium chloride. Then we add 50 ml of distilled water to each substance‚ sodium carbonate dissolved faster than calcium carbonate. After we mixed both sodium carbonate and calcium chloride and they form a solid precipitate. Then we poured it a funnel with a filter paper to get the solid precipitate. Purpose ● The purposed
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Chemestry Lab Rates of Reaction (Picture from: http://sciencespot.net/Pages/kdzchem.html) The rate of reaction is how fast or slow a reaction is completed. This is important for factories and chemists all over the world. What happenes during a reaction is atoms or molecules that collide and form new molecules. You can affect this rate of reaction with: temperature of reactants or suroundings‚ surface area of reactants‚ if there is a catalyst present‚ but in theis lab the concentration was changed
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The Effect of Temperature on The Viscosity of Glycerol Research Question: What is the effect of increasing the independent variable of the temperature of glycerol (30ºC‚ 40ºC‚ 50ºC‚ 60ºC and 70ºC) (+ 0.5ºC) using a hotplate and measured using a thermometer (+ 0.05º)‚ on the dependent variable of time (secs + 0.2) taken for 50mL (+ 0.05ml) of glycerol to flow through a 50cm3 burette (+ 0.05cm3) into a 250 mL beaker (+ 12.5 mL) measured by a digital stopwatch (+ 0.2secs)‚ therefore indicating the
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Introduction In a Grignard reaction‚ a Grignard reagent (R–MgX) adds to the carbonyl group in an aldehyde or ketone to form an alcohol (Figure 1). The reaction of a Grignard reagent with formaldehyde can be to synthesize a primary alcohol‚ with any other aldehyde can be used to synthesize a secondary alcohol‚ while the reaction with ketone is useful in the synthesis of a tertiary alcohol. Figure 1. General reaction mechanism of a Grignard Reaction The preparation of the Grignard reagent involves
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The purpose of the lab was to find out the chemical elements based on the color of the flame that elements make by their reaction. The work we completed in the lab was testing the chemical effects of the flame from the chemicals. We tested different elements and wrote down our observations. I accomplished the knowledge of testing chemicals and making responses based on our observations.Electrons are the particles found in the chemicals that may be responsible for the production of colored light.
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