The Atom The basic idea of the atom was adopted by scientists thousands of years later because it explained new discoveries in the field of chemistry. Long after chemical atoms were found to be divisible‚ and even after smaller‚ truly indivisible particles were identified. Over time theories of the atom changed. The nature of atoms in philosophy varied a lot over time and between cultures and schools. The Plum Pudding Model was proposed in 1904 before the discovery of the atomic nucleus in order
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Make-up is hugely versatile‚ not only in terms of colours and products‚ but also in terms of how it is worn. While some wear make-up to create a large and dramatic appearance‚ others will wear make-up more subtly. Make-up can be worn in a wide variety of situations‚ ranging from work‚ events‚ nights out‚ and even just round the house if you so desire. As a result of such diversity‚ the make-up industry is massive‚ meaning that everybody should be able to find products that they would want to wear
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AND PURIFICATION OF ORGANIC COMPOUNDS AIMS: To isolate organic‚ inorganic and component from a given sample. To become acquainted with various separation methods. To examine the solubility behavior of the various compounds in a mixture using different solvents. INTRODUCTION A commonly used method of separating a mixture of organic compounds is known as liquid-liquid extraction. Most reactions of organic compounds require extraction at
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How do banks make money? Banks are just like other businesses. Their product just happens to be money. Other businesses sell widgets or services; banks sell money -- in the form of loans‚ certificates of deposit (CDs) and other financial products. They make money on the interest they charge on loans because that interest is higher than the interest they pay on depositors’ accounts. The interest rate a bank charges its borrowers depends on both the number of people who want to borrow and the
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Name ________________________________ Organic Molecules Review Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. Ions are a. electrically neutral fragments of a molecule that has been split apart. b. polar molecules c. radioactive isotopes that give off alpha‚ beta‚ or gamma d. charged atoms or molecules that have gained or lost electrons. ____ 2. Sodium has eleven protons. How many electrons does it have in its outermost
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Peter and the Seven Enchanted Trees By Rafael Navia Peter is a very poor young man that leaves his house to find fortune. He starts a journey and met some friends. He will need his friends and his good intentions to overcome the obstacles that life have prepared for him. Peter: A young man with a very big heart. Old man: A powerful wizard who owes Peter a favor. Athos: A very strong man‚ and a friend of Peter who owes him a favor. Drako: A man who can drink an entire lake
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Student’s name: Anh Tran Class: Stage Make Up Date: 1/18/13 Gino Acevedo Gino Acevedo grew up in Phoenix‚ Arizona in the United States. His career has been tremendously varied‚ from working at a company designing and making Halloween masks to a chance meeting with legendary Hollywood make-up artist Rich Baker and work on some Hollywood’s biggest films‚ to New Zealand‚ Richard Taylor and “The Lord of the Rings. Therefore‚ Gino certainly has a lot of experience in visual creature effects art
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Experiment No. 1: MELTING POINT AND BOILING POINTS OF ORGANIC COMPOUNDS ABSTRACT The properties of organic compounds depend on their chemical structures. Intermolecular forces of attraction affect physical properties such as melting and boiling point. Through the Thomas Hoover apparatus‚ the melting point of 8 test compounds was determined. Salicylic acid exhibited the highest melting point while naphthalene‚ the lowest. The stronger the intermolecular forces of attraction‚ the higher the melting
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The History of the Atom The History of the Atom Democritus first proposed an atomic model. He said that all matter could be divided into smaller and smaller pieces until a single indivisible particle was reached. He called this particle an atom after the Greek word ‘atomos’ meaning not cuttable. He believed that different atoms are of different sizes‚ have regular geometric shapes and are always in motion. He also said that there is empty space between atoms. Aristotle severely criticized Democritus’
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Introduction An atom is the smallest part of an element that can take part in a chemical change. The word “atom” comes from the Greek “atomos”‚ which means “unable to be cut”. Atomism is the philosophy of the existence of atoms. The first theories of atoms come from India. There was a Hindu sage named Kanad that hypothesized that all mater was composed of earth‚ water‚ light‚ wind‚ ether‚ time‚ space‚ mind and soul. Then another philosopher named Pakuda Katyayana suggested that everything can be
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