CHEMISTRY PROJECT WORK SESSION -2013-2014 ROLL NO- CLASS-XII ‘A’ SUBMITTED BY SUBMITTED TO ROHIT LAKHERA Mrs. ANITA BISHT CERTIFICATE This is hereby to certify that‚ the original and genuine investigation work has been carried out to investigate about the subject matter and related data collection
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In the 18th and 19th centuries scientists wrestled with identifying and describing the nature of the “stuff” that produced change. One concept that became popular for a while was that of “caloric” (what we now call heat). “Caloric was originally conceived of as a quantity that would flow from a hotter object to a cooler one that would warm up as a result. It answered the need for a way for the cause of warming to get from here to there. Not only did caloric serve as a cause for warming‚ it
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first-hand investigation – decarbonating soft drink identify data‚ plan and perform a first-hand investigation to decarbonate soft drink and gather data to measure the mass changes involved and calculate the volume of gas released at 250C and 100kpa Aim: to decarbonate soft drink and measure the mass changes involved and calculate the volume of gas released Hypothesis: When decarbonating soft drink‚ carbon dioxide will be lost to the atmosphere‚ decreasing the mass of the soft drink can.
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Chemistry Review (mid-term) 1. Use the equation for atomic mass to answer the following questions. (http://johnheilchem10.escuelacampoalegre.wikispaces.net/file/view/average+atomic+mass+calculations+-+3.pdf) 1. Argon has three naturally occurring isotopes: argon-36‚ argon-38‚ and argon-40. Based on argon’sreported atomic mass‚ which isotope do you think is the most abundant in nature? Explain. 2. Copper is made of two isotopes. Copper-63 is 69.17% abundant and it has a mass of 62.9296 amu.
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Nouchee Lor Mrs. Kottke IB HL English 11 October 2012 Reflective Statement “He was of medium height. His shapely‚ slim figure and broad shoulders gave evidence of a strong constitution‚ capable of enduring all the hardships of a nomad life and changes of climates‚ and of resisting with success both the demoralizing effects of life in the Capital and tempests of the soul” (Lermontov pg. 50). A true man is a man who takes responsibility. He is a man who takes responsibility
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1. Raymond Vernon argued that new products were developed by U.S. firms and first sold in the U.S. market because c. The wealth and size of the U.S market gave the firms an incentive to develop new products 2. This theory‚ initially proposed by Raymond Vernon‚ was based on the observation that for most of the 20th century a very large proportion of the world’s new products had been developed by U.S. firms and sold first in the U.S. market. a. Product life cycle 3. China‚ deliberately keeping
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Consulting Report Mechanical Properties Cold-Rolled Steel Student: Predrag Bogunovic STUDENT ID: 11807777 DATE: 4-APR-2014 1 TABLE OF CONTENTS 1 Introduction .................................................................................................................................... 2 2 Methods .......................................................................................................................................... 2 3 Results......................................
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PSYCHOLOGY liam.o’leary.11@ucl.ac.uk In Psychology‚ you will only get penalised for NOT ASKING QUESTIONS. Paper 1 = Core material 50% of final grade Section A – 53 % Section B – 47% A – Knowledge & Comprehension B – Evidence of critical thinking: application‚ analysis‚ synthesis and evaluation C – Organisation (Structure) Strategy: 20 mins + 5 mins planning for each of SAQs questions 50 mins for LAQ question CHOOSING and planning 10 mins for spellcheck Paper 2 = 25% of final grade Two
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Chemistry Ozone Depletion Ozone depletion describes two distinct but related phenomena observed since the late 1970s: a steady decline of about 4% per decade in the total volume of ozone in Earth’s stratosphere (the ozone layer)‚ and a much larger springtime decrease in stratospheric ozone over Earth’s polar regions. The latter phenomenon is referred to as theozone hole. In addition to these well-known stratospheric phenomena‚ there are also springtime polartropospheric ozone depletion events. The
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Data-based questions Study the photos below and answer the following questions. Photo A Photo B Photo C (a) What are industries shown in photos A‚ B and C respectively? (3 marks) (b) Draw a diagram to illustrate the manufacturing system of the industry shown in photo A. (4 marks) (c) Describe and explain the characteristics of these three industries. (i) Photo A (3 marks) (ii) Photo B (3 marks) (iii) Photo C (in tradition) (3 marks) (d) How do personal factors affect
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