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 was in an evacuated container. The detector was a ZnS screen observed
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Doing the right thing | Sustainability Strategy 2007–2015 Doing the right thing. Contents 2 3 4 7 8 9 0 1 2 1 8 1 0 2 2 2 4 2 6 2 8 2 Foreword What sustainability means to Woolworths Limited Our major commitments and targets Who is Woolworths Limited? Our external engagement Engaging our people Our sustainability priorities Climate change Water Sourcing Packaging Waste Green Stores Implementation and reporting All of us‚ every day. Foreword
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Assignment: Atomic Theory 1. Write the complete symbol and determine the no. of electrons‚ protons and neutrons of the following e- p+ n a.) Oxygen - 8 8 b.) Cesium - 55 55 c.) Argon - 18 18 d.) Uranium - 92 92 e.) Copper - 29 29 2. Calculate the atomic mass of sulfur from its natural isotope. f.) Sulfur-36 g.) Sulfur-32 h.) Sulfur-33 i.) Sulfur-34 3. Complete this table. Symbol of Elements | Atomic Number | Atomic Mass | #
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United States shocked the world by dropping an atomic bomb over the city of Hiroshima‚ Japan. (www.grolier.com) Hiroshima was a major industrial city with an estimated population of almost 400‚000 people. A B-29 bomber was loaded with the Atomic Bomb and left the United States Pacific air base at 2:45 a.m. local time and dropped the bomb at 8:15 a.m. The bomb was detonated one minute after being dropped. The atomic bomb‚ nicknamed "Little Boy"‚ which was dropped on the Hiroshima City‚ exploded at
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DEVELOPMENT OF THE ATOMIC THEORY Part A: HISTORY * 1869: Mendeleev formulated the Table of the Elements - listing them by their atomic weight and grouping them with similar characteristics. * 1897: JJ Thomson discovered electron and isotopes‚ and invented the mass spectrometer. * 1898: Marie Curie discovered and isolated radium‚ a new element which unprompted disintegrated into other elements. This proved that the atoms of one element at least were not indivisible. * 1911: Ernest
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things to do before you die~Austin Hammond~9/17/12 Things to do before I die Grammar and style There is a extensive number of things I always wished I could do‚ before I die. I’ve created a list of 10 things. some of these plausible‚ and some radical. The things I wish I could do at some point are probably going to happen one day‚ So there’s no need for me to fret. All i need is a tremendous sum of money to cover the expenses. 1. White water rafting. I know that lots of people have already
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Hiroshima: Was Dropping the Atomic Bomb a Military Necessity? On the morning of August 6th‚ 1945 at around 8:16 a.m.‚ the United States dropped the first bomb on Hiroshima. This bomb was given the nickname “Little Boy.” Three days after the first atomic bomb was dropped‚ on August 9th‚ 1945 at around 11:02 a.m.‚ the United States dropped a second atomic bomb on Nagasaki. This bomb was given the nickname “Fat Man.” These two bombs immensely destroyed these cities and took the lives of many people
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cannot apply Read the ticking bomb scenario “Suppose a fanatic‚ perfectly willing to die rather than collaborate in the thwarting of his own scheme‚ has set a hidden nuclear device to explode in the heart of Paris. There is no time to evacuate the innocent people or even the moveable art treasures- the only hope of preventing tragedy is to torture the perpetrator‚ find the device and deactivate it” However this scenario does not explain how the suspect was caught or identified or whether he
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Life Outcomes ‘’She just want you to do the right thing’’ is what I tell myself as I struggle through life obstacles. She referring to both my mom‚ dad‚ and family altogether. That inspirational quote helps me throughout my education‚ and helps me focus on who is there for me and who cares the most. Also‚ when having education‚ it can get you a good job and get you money. Money‚ family‚ and education is the most important thing in life today. In the book ‘’The Other Wes Moore‚’’ we see
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Time Bomb In the United States about every other marriage ends in divorce these days. The reasons are varied‚ but what matters more are those directly affected‚ the children. Fifty percent will witness their parents’ divorce before they are adults and one of ten of those children will see it a second or even third time. We know the nature of divorce can be an ugly mess for everyone involved‚ but who speaks for the little guy? Most times adults will control the situation whether it is moving to
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