Chemistry Grade 11 576 Energy Trapped in Hydrocarbons he whole world runs on energy—and so do you! Fossil fuels provide energy to power cars and heat buildings. Food provides energy to keep your body alive and warm. Both sources of energy come from organic compounds‚ such as hydrocarbons‚ sugars‚ and proteins. Green plants‚ algae‚ and plankton trap the Sun’s energy through the process of photosynthesis. After these organisms die‚ they are broken down by natural processes. Their remains accumulate
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CHEMISTRY FOR HUMAN WELFARE: IT’S PROMISES AND CONCERNS 2011 had been officially declared “The International Year of Chemistry” t o commemorate the achievements of chemistry and its contributions to mankind. It is so fitting that 2011 is the centenary year for the award of Nobel Prize to Marie Curie for her discovery of Radium and Polonium. Also this is the 150th birth anniversary of Dr. P .C Roy. All living things in this beautiful world are nothing but
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Chemistry is the science of matter and the changes it undergoes. The science of matter is also addressed by physics‚ but while physics takes a more general and fundamental approach‚ chemistry is more specialized‚ being concerned with the composition‚ behavior (or reaction)‚ structure‚ and properties of matter‚ as well as the changes it undergoes during chemical reactions. It is a physical science which studies various substances‚ atoms‚ molecules‚ crystals and other aggregates of matter whether in
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Jason Liew Ans170 TA: Victoria Cussen Welfare Concerns of Pedigree Dogs Issues relating to the health and welfare of pedigree dogs have been expressed for nearly 50 years (Hodgeman‚ 1963). Companion dogs were once selected for their ability to perform in a working environment. However‚ the dogs of today are selected for aesthetic qualities set out in written breed standards (Rooney & Sargan‚ 2010). This aspires the
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INTRODUCTION ABOUT THE STUDY Employee or Labor Welfare is a comprehensive term including various services‚ benefits and facilities offered to employees by the employer. Through such generous fringes benefits the employer makes the life worth living for employees. The welfare amenities are extended to addition to normal wages and other economic rewards available to employees as per the legal provisions. According to Dr.Parandikar‚ “Labor welfare work for improving the health‚ safety and general
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CHAPTER 10 MICROBES IN HUMAN WELFARE 10.1 Microbes in Household Products 10.2 Microbes in Industrial Products 10.3 Microbes in Sewage Treatment 10.4 Microbes in Production of Biogas 10.5 Microbes as Biocontrol Agents 10.6 Microbes as Biofertilisers Besides macroscopic plants and animals‚ microbes are the major components of biological systems on this earth. You have studied about the diversity of living organisms in Class XI. Do you remember which Kingdoms among the living
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Editor’s Note: This occasional series of articles looks at the vital things in our lives and the chemistry they are made of. You are what you eat. But do you recall munching some molybdenum or snacking on selenium? Some 60 chemical elements are found in the body‚ but what all of them are doing there is still unknown. Roughly 96 percent of the mass of the human body is made up of just four elements: oxygen‚ carbon‚ hydrogen and nitrogen‚ with a lot of that in the form of water. The remaining
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was most motivated to finish school‚ because I made a promise to my mother before she passed with liver cancer in 2003. At that time‚ I was going to cosmetology school and had two little girls. I remember her looking weak and frail in her hospital bed. I could see how tired and almost sedated she was‚ but still she worried about how my future was going to turn out. She looked at me with tears running from the sides of her eyes and made me promise her that I would finish school. I have since then obtained
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Concepts of C. Wright Mills’ The Promise of Sociology C. Wright Mills was an astounding sociologist‚ social critic‚ and idealist. His writings and character sparked debate within the sociological community. He advocated that one key purpose of a sociologist was to create social change against the oppression of government. In The Promise of Sociology‚ C. Wright Mills explores the imagination of a sociologist through the understanding of social analysis and the idea that society interrelates with
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What are the major issues for publics and the key troubles of private individuals in our time? To formulate issues and troubles‚ we must ask what values are cherished yet threatened‚ and what values are cherished and supported‚ by the characterizing trends of our period. In the case both of threat and of support we must ask what salient contradictions of structure may be involved. When people cherish some set of values and do not feel any threat to them‚ they experience well-being. When they cherish
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