Setting Up Experiment 2D: Separation of a mixture by Paper Chromatography Objectives: 1. To assemble and operate a paper chromatography apparatus 2. To study and the significance of Rf values 3. To test various food colorings and to calculate their Rf values 4. To compare measured Rf values with standard Rf values 5. To separate mixtures of food coloring into their components 6. To identify the components of mixtures by means of their Rf values Materials / Apparatus: See “Health Chemistry Lab Experiments”
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Chemistry of Fireworks By Anuradha Sahu Everyone enjoys the amazing firework shows on the Fourth of July with the beautiful vibrant colors and sparks every year. Fireworks have been part of this world for a very long time. They have been used for enjoyment and for signalling purposes. Every culture has their own significance and use of fireworks. But all fireworks have something in common; the chemistry that makes them work. No matter where you find them‚ they are made up of the same compounds
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line‚ and the other card had 3 more lines then the participants had to select which line of the second card was the same height of the line in the first card. The majority of members of each group were confederates and had to answer wrong to see how the minority would answer. Asch found out that about 30% of the minority conformed to the majority‚ conformity was strongest when the majority made a unanimous decision. Asch conformity studies have been repeated with a variety of variables all around
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Experimental Chemistry In this topic‚ you will learn: www.revision-notes.co.cc Hazard Warning Labels www.revision-notes.co.cc Measurement: Mass‚ Volume‚ Time and Temperature www.revision-notes.co.cc www.revision-notes.co.cc Collection of Gases www.revision-notes.co.cc Identification of Gases www.revision-notes.co.cc The Particulate Nature of Matter In this topic‚ you will learn: www.revision-notes.co.cc States of Matter Kinetic Theory www.revision-notes
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interaction Milgram’s experiment is to study the effect of obedience to authority. Study was performed to determine what factors influenced people to submit to authority and to what extent people conform an order against their conscience despite knowing it causes distress and harm to another person. McLeod‚ S. (1970). 40 male participants between age of 20 to 50 years old from various occupation ranging from unskilled to professional were recruited for the experiment. They were rewarded $4.50
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August 22‚ 2013 Assignment 1: The Chemistry of Life Effects of Acid Rain There are many different types of negative effects acid rain has on the world. Acid rain is the mixture of wet and dry deposition from the atmosphere containing higher than normal amounts of nitric and sulfuric acids. Pollution contributes to the forming of acid rain. One of the main causes is industrial burning of coal and other fossil fuels the oxides they contain and combine with atmospheric water which forms acids.
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CONCEPTS IN ORGANIC CHEMISTRY • Inductive Effect : Inductive effect is defined as permanent displacement of shared electron pair in a carbon chain towards more electronegative atom or group. Types of Inductive effect : 1.Negative Inductive Effect : (—I effect‚ Electron withdrawing effect) when an electronegative atom or group (more electro negative than hydrogen)is attached to the terminal of the carbon chain in a compound‚ the electrons are displaced in the direction of the attached
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The Milgram Experiment Outline Topic: The Milgram experiment I) The experiment A) Who was involved with the experiment? B) How they got participants C) What the subjects thought was happening i)Learning Task ii) Memory Study iii) Electric shock for wrong answer iv) “Prods” to continue the shocks D) What actually happened i) It was a test for obedience not memory ii) Vocal response from the victims
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Some errors we faced were water being displaced when pouring the metals into the test tubes (could have changed volume). Also‚ we should have given the scale more time to get and exact answer rather than writing down one of the first numbers we saw. Now‚ there are ways we can certainly improve this experiment. One would be to take more time to get and exact volume rather than generalizing based on previous data (30.0 exactly for all initial volumes of water). We realized that this could have thrown
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Jashandeep Gill Gammellos Chemistry Density is one of the fundamental principles of physics. Density is the reason why a plank of wood floats on water while a piece of metal several times smaller will sink. Density of an object is measured in g/cm³ or g/cc. The equation is D=M/V‚ D being the density of the object‚ M being the mass of the object‚ and V being the volume of the object. Mass is the space an object takes up. It is the amount of matter present in an object. Mass is measured using
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