Reactions & Nuclear Chemistry Assessment Task Assignment Question 1 Produce a summary reactions sheet for all the chemical reactions encountered in production of materials. Your summary should contain the following components a) Name of reaction b) General word equation c) Balance formulae equation d) An example of the reaction Question 2 What types of instruments and processes are used to detect radiation? The properties of nuclear radiation are used to detect their
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bui (dnb562) – HW 24-2 – Antoniewicz – (57050) This print-out should have 15 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0 points A proton is briefly accelerated in the −y direction‚ as shown in the figure below. A × B × C × k= a + D × 1 003 10.0 points An electric field acts on an electron‚ resulting in an acceleration of 1.6 × 1017 m/s2 for a short time. What is the magnitude of the radiative electric field observed at
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Through his famous 1911 gold-foil experiment‚ Earnest Rutherford‚ a former student of Thomson‚ evolved the atomic model once again. Rutherford and his colleagues fired alpha particles‚ helium atoms that had lost their two electrons‚ at a thin piece of gold foil (only 0.00004 cm in width). They used a screen coated in zinc sulfide to "catch" the alpha particles after they had penetrated the gold foil. The screen would also emit a flash of light where it was hit by an alpha particle‚ which enabled
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Rutherford’s Gold Foil Experiment Rutherford started his scientific career with much success in local schools leading to a scholarship to Nelson College. After achieving more academic honors at Nelson College‚ Rutherford moved on to Cambridge University’s Cavendish laboratory. There he was lead by his mentor J.J. Thomson convinced him to study radiation. By 1889 Rutherford was ready to earn a living and sought a job. With Thomson’s recommendation McGill University in Montreal accepted
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Pentaquarks Elusive or Non-existent? Pentaquarks‚ Elusive or Non-existent? Outline: Beginning in 2003‚ scientists claim to have experimental evidence of a five-quark combination‚ and it is now being called a pentaquark. Pentaquarks are postulated subatomic particles consisting of four quarks and one antiquart. Scientists that have done research believe it to exist; others are doubtful skeptics that are against its existence. I. Introduction of Pentaquarks A. Definition B
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The Rutherford Model of the Atom 1. In 1911 Rutherford proposed the nuclear model of atomic structure. He suggested that an atom consists of a central nucleus (where most of the mass of the atom is concentrated) having a positive charge‚ surrounded by moving electrons carrying negative charge. Geiger and Marsden carried out an experiment to verify his proposal. The Geiger/Marsden a Particle Scattering Experiment 1. The apparatus is illustrated in the diagram below. | 2. The apparatus
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Albert Einstein is a very influential role model. Albert Einstein wasn’t only a scientist who discovered relativity‚ and made the equation E= mc2‚ he was an intelligent man who wanted to know how everything worked. Albert Einstein achieved many goals in life. Albert Einstein has won many awards because of is accomplishments. Albert Einstein was born March 14‚ 1879 in Ulm Germany. He was raised in Ulm‚ Germany but six years after he was born he moved to Munich‚ Germany. Albert began going to school
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Name ___________________________ Chapter 4 Class ___________________ Date _____________ Atomic Structure Section 4.1 Studying Atoms (pages 100-105) This section discusses the development of atomic models. Reading Strategy (page 100) Summarizing As you read‚ complete the table about atomic models. For more information on this Reading Strategy‚ see the Reading and Study Skills in the Skills and Reference Handbook at the end of your textbook. Atomic Models Scientist Evidence
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Bismuth was discovered in the fifteenth century by a french chemist named Claude Geoffroy the Younger. At first his colleagues thought he was crazy‚ thinking that he had found lead or tin. But Geoffroy had distinguished it as a unique element. The name Bismuth comes from the word Wisuth meaning “white mass”‚ because pure Bismuth is white. When pure bismuth is mixed with lead‚ tin‚iron or cadmium the multi colored Bismuth is created. Bismuth falls under the pnictogen family. This family consists
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About Radiation: Radiation is an energy that is transmitted in the form of waves or tiny particles. These are electromagnetic waves‚ which are classified as ’ionizing radiation’ and ’non ionizing radiation’. Electromagnetic radiation is when an object gives out electromagnetic radiation. For example when you on a torch light‚ the light is an example of radiation. Ionising radiation has more energy than non ionising radiation. Therefore it is enough to cause chemical changes by breaking chemical
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