Chemistry 1. 5 points of the particle theory: * 1. All matter is made up of tiny particle with empty spaces between them * 2. Different substances are made up of different particles * 3. Particle are always in constant random motion * 4. Particles of a substance move faster as the temperature increases * 5. Particles attract each other 2. Changing state from solid to liquid to gas: * form a solid when the forces are strong enough to form a rigid shape * they gain
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A unit of matter, the smallest unit of an element, consisting of a dense, central, positively charged nucleus surrounded by a system of electrons, equal in number to the number of nuclear protons, the entire structure having an approximate diameter of 10-8 centimeter and characteristically remaining undivided in chemical reactions except for limited removal, transfer, or exchange of certain electrons. The history of the study of the atomic nature of matter illustrates the thinking process that goes
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The Modern Development of Atomic Theory According to Democritus, “Nothing exists except atoms and empty space; everything else is opinion.” This conveys the controversy in scientific investigations made in defining a singular molecule. Since 460 BC, atomism has been an alternating concept of chemistry. Several significant scientists have contributed to this field profoundly. The modern development of the atomic theory is based on researches and discoveries of Democritus, John Dalton, J.J. Thomson
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0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.5000i Iz = 0.5000 0 0 -0.5000 0 0 0 0 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 - 0.5000i 0.0000 + 0.0000i 0 0 0 0 Spin operators of proton: Sx = 0 0 0.5000 0 0 -0.5000 0.5000 0 0 0 0 0 0 0.5000 0.5000 0 0 0.5000 0 0 Sy = 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.5000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0
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particles Periodic table: what it is, uses, information contained in it Names of certain groups (columns) in the periodic table (covered in class) Elements, compounds, mixtures (homogeneous and heterogeneous) Metals, non-metals, metalloids Isotopes; protons, neutrons, and electrons in atoms and
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Greek era |Democritus |"by convention bitter, by convention sweet, but in reality atoms and void" | | |1704 |Isaac Newton |Proposed a mechanical universe with small solid masses in motion. | |1803 |John Dalton |Proposed an "atomic theory" with spherical solid atoms based upon measurable properties of mass. | |1832 |Michael Faraday |Studied the
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Figures 4 List of Tables: 5 Preface 6 Acknowledgements 7 Executive Summary 8 Abstract 9 PART ONE 10 Launching the Proton Prevé – DRIVE IT TO believe IT 10 1) Prevé – Product (Atrributes) 10 2) Prevé - Price 10 3) Prevé – Place (Distribution) 11 4) Prevé – Promotion 11 COMPANY BACKGROUND 12 PROTON Business Strategy 12 FINANCIAL INSIGHTS OF PROTON 14 Critical Success factor 15 Product 15 Price 15 Promotion 15 Place 15 Critical Success factor 16 Comparison of
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have similar properties. The periodic table is arranged by periods and groups. The atomic number usually increases when moving across a row or period. The atomic structure of an atom consists of an electron, a proton, and a neutron. Electrons have light particles and a negative charge. Protons have heavier particles and have a positive charge. Neutrons also have heavier particles but do not a charge thus being neutral. Elements are commonly classified ad metals, nonmetals, or metalloids. The trend
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Accomplishments of Dr. Segrè i The Life, Times and Accomplishments of Dr. Emilio Segrè Zachary Gaston English 1010-02 Dr. Bray November 24, 2008 Accomplishments of Dr. Segrè 1 Emilio Segrè was born in Tivoli, Italy on February 1st, 1905. His parents were Giuseppe Segrè, the manufacturer, and Amelia Treves, his mother. His father ran a papermaking and hydroelectric plant and his uncles were scholars, lawyers
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1. The different levels of organization are listed as follows: Cell- the structural and functional unit of all living things Tissue – a group of cells with a common structure and function Organ – composed of tissues functioning together for a specific task Organ System – composed of several organs working together Organism – an individual; complex individuals contain organ systems. Population – organisms of the same species in a particular area. 2. 7 basic characteristics of life are
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