HKCEE Chemistry 2007 Paper 1 Section A 1. A is a compound formed from oxygen and magnesium‚ while B is a compound formed from oxygen and fluorine. a) Draw the electronic diagram of A‚ showing electrons in he outermost shells only. (1) b) Draw the electronic diagram of B‚ showing electrons in the outermost shells only. (1) c) Compare the melting points of A and B. Explains your answer. Melting point of A is higher than that of B. Ions of A are linked by strong ionic bonds /
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Toxicological Chemistry - relates the aspects of toxicology to the chemical structure and reactivity of the toxin. It is concerned with the chemical interaction of the toxin with the receptor that gives the physiological response. The ultimate aim is to relate functional group chemistry of both toxin and receptor to the interaction Toxicity - the degree to which a substance causes damage to an organism Acute toxicity - the adverse effects resulting from a single exposure‚ or exposure over
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If We Had Known About Green Chemistry In 1951‚ How Would Things Be Different Today? Green Chemistry is the making of chemical products that reduces or eliminates the use and production of hazardous substances in the designing‚ making‚ and use of chemical products. It involves the designing and re-designing of chemical creation and chemical products to prevent pollution which will therefore solve environmental problems. Green Chemistry is environmentally safe and has very little side effects on
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CHEMISTRY PROJECT :AIM: TO COMPARE RATE OF FERMENTATION OF GIVEN SAMPLE OF WHEAT FLOUR‚GRAM FLOUR‚RICE FLOUR AND POTATO. SUBMITTED BY :- NAME: Shreyas kelkar CLASS:XII A ROLL NO: 26 INDEX # AIM # CERTIFICATE # ACKNOWLEDGEMENT # DECLARATION # OBJECTIVE # INTRODUCTION # MATERIALS REQUIRED # PROCEDURE # OBSERVATIONS # BIBLIOGRAPHY CERTIFICATE This is to certify that this project is submitted by SHREYAS KELKAR to the chemistry department‚ KENDRIYA VIDYALAYA NO. 1‚ INDORE was carried out
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Master of Business Administration (International Business) Programme Code: MIB Duration – 2 Years Full Time Programme Structure and Curriculum & Scheme of Examination 2011 AMITY UNIVERISTY UTTAR PRADESH GAUTAM BUDDHA NAGAR PREAMBLE Amity University aims to achieve academic excellence by providing multi-faceted education to students and encourage them to reach the pinnacle of success. The University has designed a system that would provide rigorous academic programme with
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Electronegativity is the ability of an atom to attract the electrons in a covalent bond • Down Group 7‚ the shared electrons are further from the nucleus and more shielded. There is a weaker attraction for the bonding electrons down the Group 2) Trends in chemical properties of the elements • The Group 7 elements are oxidising agents which gain an electron when they react • The ability to oxidise decreases down Group 7 • This can be shown by halogen displacement reactions where
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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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How to find success in IB Biology The International Baccalaureate program offers many classes in the vast majority of SL and HL credits with the program and does so with the science section of the program. There are many different HL science classes that can be taken in IB but here at Edison‚ there are only two classes offered once you become a senior who is looking to take an HL science class. The two choices are HL Physics and HL Biology. Both are arguably the toughest IB classes offered at Edison
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Abner Lopez Philosophy Cush Building 10 November 12‚ 2013 Reflection Paper#2 Each and every one of us has our own perspective of happiness. It could be being cheerful all the time‚ having a lot of money‚ going on vacations multiple times‚ partying‚ drinking‚ winning a competition or even eating. "Every art and every inquiry‚ and similarly every action and choice‚ is thought to aim at some good; and for this
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05 November 2013 Literature Review: Nuclear Chemistry and its Effects on the World In today’s society‚ nuclear chemistry is becoming more and more common and is being used in a variety of ways including for weapons and the medical field but the significance of this type of chemistry is its impact and what it has contributed to the world. Nuclear chemistry is the branch of chemistry concerned with nuclear reactions‚ radioactive substances and is the study of the chemical and physical properties
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