Properties of Different Bonds An ionic compound forms from a nonmetal and metal element. A covalent compound is formed by two non metal elements. A metallic compound is formed by two metal elements. Metallic compounds have generally high melting points‚ are loose and flexible with their electrons‚ conduct electricity well‚ and have low solubility in water. Ionic compounds are generally crystals‚ have a high melting point‚ and usually have high solubility in water and conduct electricity well when
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Question 1 Electromagnetic radiation behaves both as particles (called photons) and as waves. Wavelength () and frequency () are related according to the equation where is the speed of light (). The energy ( in joules) contained in one quantum of electromagnetic radiation is described by the equation where is Planck’s constant (). Note that frequency has units of inverse seconds ()‚ which are more commonly expressed as hertz (). Part A A microwave oven operates at 2.40 . What is the wavelength
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Decomposition Reaction-Electrolysis of Water Introduction: Demonstrate the decomposition of water in simple but very colorful and dramatic fashion on an overhead projector. Concepts: • Decomposition reaction • Oxidation–reduction • Electrolysis • pH Materials: Sodium Chloride/universal indicator solution‚ NaCl‚ 25 mL Overhead projector Pencil lead‚ 0.7 mm Battery lead with alligator clips Petri dish‚ disposable Battery‚ 9-Volt
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Name: _____________________________ Submit Worksheets for Credit Stereochemistry Workshop 1. Assign the marked asymmetric centers with R or S designations. 2. Rank each of the following sets of substituents (highest priority substituent = 1; lowest priority substituent = 4). Place the number in the blank below the substituent. (a) (b) 3. Determine the relationship between each of the following pairs of structures (enantiomers‚ diastereomers‚ constitutional isomers
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Friends with Benefits Can friendship survive sex? This is a question that has plundered the minds of mankind. Sometimes it can be easy to fall for a friend or to have strong emotions for them. This question is significant because people need to know whether sex will benefit or hinder their friendship. They also need to know the value of themselves and their friendship. Sex brings so many different complications in one’s life. I believe that sex in a friendship is acceptable as long as both
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How to Be a Great Friend Do you want to be a good best friend but don’t know how or where to start that perfect friendship? Have you fallen out with your best mate and want to prove how nice you can be if they’ll forgive you? Be your own best friend first. Learn how to respect yourself. If you can’t respect yourself‚ then you can’t respect others. Decide what boundaries are important to you and respect them. Not only is this healthy for you‚ but you’ll also get enough practice and experience so that
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I’m very proud myself to have this chance. Generally‚ in my life‚ I’ve met many friends. Among than‚ I’ve chosen to talk about one of my lovely friend who is JJ‚ lives quiet a far of my home. We’ve know each other most of our lives. We met in preschool when we were around four of five years old‚ and we’ve been friends ever since both had human chemistry. We like to do a lot of thin together .when we were little kids we played a lot of different kinds of games together. He is walking as if a model
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CERTIFICATE This is to certify that Ranjeeta Singh of class XI (Science) has completed the chemistry investigatory project entitled The Study of the Acidity of Different Samples of Tea Leaves and the Reasons for the Variation in their Taste as a partial fulfillment of course curriculum under the supervision of Mrs. Mamta Agarwal. This is a bonafide work prepared by herself. Signature of Internal Examiner ACKNOWLEDGEMENT I bonafied CBSE for giving us
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Chemistry in the Movies Assignment (25 Points Extra Credit) This project will explore the public perception of chemistry. Each participating student will analyze a movie. Movies may be selected from the list on the following page or the student may find analyze any other academically acceptable movie with a chemist or chemical theme. All reviews will use academically acceptable language‚ spelling‚ and grammar and be 400 words minimum. For each movie‚ the student
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A friend in need is a friend indeed. People today are becoming so selfish that it has become difficult to call anybody my best friend. Everybody tries to exploit others. The people whom you regard as your best friends often prove otherwise. True friends have become as rare as the dodo. A search for them is bound to fail. However‚ if there is somebody whom we can call our friend‚ we are lucky. To have a good friend is worth a million rupees‚ even more. Nikhil is my best friend. He is tall
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