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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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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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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A. Role of Chemistry in Society Applications of chemical science have contributed significantly to the advancement of human civilization (1‚ 2‚ 3). With a growing understanding and ability to manipulate chemical molecules‚ the post-World War II chemist was considered a societal problem solver. They synthesized crop-enhancing agricultural chemicals to ensure a constant and viable food supply. They played a significant role in the eradication of deadly diseases by developing life-saving pharmaceuticals
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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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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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ROLE OF GOVERNMENT IN SOCIAL WELFARE A Government consists of group of people who govern a state. The proper governing of state plays a very important role in the development of a country. The government should take all necessary steps for the betterment of the country and its people. A democratic country is for the people‚ by the people and to the people. Therefore government of any country should act wisely for the development of the community. Social welfare is a policy in which the well being
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social cohesion‚ thereby helping to ensure social peace and social inclusion. It is an indispensable part of the government social policy and important tool to alleviate poverty. It can through national solidarity and fair burden sharing‚ contribute to human dignity‚ equity and social justice. It is also important for political inclusion‚ empowerment and the development of democracy.1 SOCIAL SECURITY STRUCTURE IN KENYA Kenya has several types of schemes which offer social security which can be divided
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