atoms can rotate and vibrate with respect to each other. These vibrations and rotations also have discrete energy levels‚ which can be considered as being packed on top of each electronic level. UV/Vis spectroscopy is routinely used in analytical chemistry for thequantitative determination of different analytes‚ such as transition metal ions‚ highly conjugated organic compounds‚ and biological macromolecules. Spectroscopic analysis is commonly carried out in solutions but solids and gases may also
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Candidate name…………………………………………………………………….. MINISTRY OF EDUCATION MASALA SECONDARY SCHOOL BOARD MOCK EXAMINATION 2014 SCIENCE 5124/3 PAPER 3 (CHEMISTRY) 1hour 15minutes Additional materials: Monday 30th July 2014. Answer paper INSTRUCTIONS TO CANDIDATES Write your name‚ centre number and candidate number at the top of this page all separate Attempt all questions in SECTION A and only TWO questions in SECTION B SECTION A (45 marks)
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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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Chemistry in the kitchen Teacher’s guidelines Lorena Payà Vayà Llicència C Curs 2007/2008 Index Unit 1. Can we do chemistry in the kitchen? 1.1. Strawberry smoothie. 1.2. Laboratory vs. Kitchen. 1.3. Safety in lab and in the kitchen. 1.4. Cutting onions or a scientific investigation. 3 Unit 2. How do we measure in the kitchen? 2.1. How do we measure the quantity of each ingredient in our cooking? 2.2. An Old Scottish Recipe or how to convert units. 2.3. Does one kilo of sugar
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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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Ice sculpture is a form of sculpture that uses ice as the raw material. Sculptures from ice can be abstract or realistic and can be functional or purely decorative. Ice sculptures are generally associated with special or extravagant events because of their limited lifetime. The lifetime of a sculpture is determined primarily by the temperature of its environment and thus‚ a sculpture can last from mere minutes to possibly months. There are several ice festivals held around the world‚ hosting competitions
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Poetry Analysis My two poems for my poetry analysis are “Fire and Ice” and “Let me not to the marriage of true minds”. The poems are written in two different time periods by unlike authors. Having two dissimilar poems help show how the authors used different techniques to connect with their audience. The author’s use of style‚ form‚ sound‚ and literary techniques help show their different techniques. “Fire and Ice” was written by Robert Frost in 1923. This was the modern time period. The sound
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weather‚ it’s time to get out and get moving. There are many excellent winter sports to participate in‚ bringing not only good health benefits but a lot of fun into day to day doldrums‚ and ice skating is one of those outstanding activities. Rockefeller Ice Rink Wikimedia Commons Cardiovascular benefits Ice skating is one of the best aerobic activities there is‚ and the best part is‚ you’ll be having so much fun out of the rink you won’t notice how hard your body is working until you’re done
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SAFE HANDLING OF DRY ICE Caution: Keep Dry Ice away from children if they cannot be closely supervised at all times. HANDLING Dry Ice temperature is extremely cold at -109.3°F or -78.5°C. Always handle Dry Ice with care and wear protective cloth or leather gloves whenever touching it. An oven mitt or towel will work. If touched briefly it is harmless‚ but prolonged contact with the skin will freeze cells and cause injury similar to a burn. STORAGE Store Dry Ice in an insulated container
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