Periodic Table of Elements 1 1 1 2 Atomic # 3 4 C Solid 5 6 7 8 Metals 9 10 11 Nonmetals 12 13 14 15 16 17 2 18 2 K 1 H 3 Symbol Name Atomic Mass 2 1 He Helium 4.002602 Hydrogen 1.00794 Alkali metals Alkaline earth metals Transition metals Poor metals Other nonmetals Noble gases 4 2 2 2 Li 11 Be Beryllium 9.012182 2 8 1 Hg Liquid H Gas Lanthanoids Actinoids 5 2 3 6 2 4
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NUCLEAR TERRORISM INTRODUCTION Nuclear terrorism denotes the detonation of a yield-producing nuclear bomb containing fissile material by terrorists.[1] Some definitions of nuclear terrorism include the sabotage of a nuclear facility and/or the detonation of a radiological device‚ colloquially termed a dirty bomb‚ but consensus is lacking. In legal terms‚ nuclear terrorism is an offense committed if a person unlawfully and intentionally “uses in any way radioactive material … with the intent
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Teen Smoking Peer pressure‚ to availability‚ to promotion‚ to the main cause‚ negative influences. These are some reasons that cause teens to smoke before the age of 18. Peer pressure is one of the most common effects that cause teens to smoke or try something that shouldn’t be tried. Especially when hanging with friends‚ a lot of teens get pressured into doing things and one of them is smoking. Friends pressure them into smoking and that’s when they try to fit in so they won’t get teased or become
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Chemistry Reference Tables Name Avogadro’s number Value 6.022 × 1023 particles/mole 0.0821 L atm mole K L mmHg 62.4 mole K 8.314 L kPa mole K 1.00 atm = 101.3 kPa = 760. mmHg = 760. torr 0°C or 273K 22.4 L Symbol Value Gas constant (R) Standard pressure Standard temperature Volume of 1 mole of any gas at STP Thermodynamic Constants Heat of fusion of water Heat of vaporization of water H f (water) Hv (water) 334 J/g 2‚260 J/g J for ice‚ 2.02 J for steam‚ g°C g°C J for liquid 4.18
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Palestine sits upon the Mediterranean Sea between Egypt‚ Syria‚ and Arabia; the land has switched hands many times over the past few thousands of years. Being a holy land for all three Abrahamic religions has led to a brutal conflict between them since their formation. The current conflict in Palestine has been raging for about three quarters of a century‚ but before it can be addressed some history must be known. For four centuries the land had been ruled by the Ottoman Empire‚ and as it began
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DISCUSSION NO. 3 THE PERIODIC TABLE OF ELEMENTS Members: Salvador‚ Kim Kristal G. Sanchez‚ Jhoana Marie V. Santeco‚ Francesca Anya C. Sy‚ Shane Francheska Lei Dayanne S. Ureta‚ Nheimelyn E. INUR-7 GROUP 10 HISTORY OF THE PERIODIC TABLE The discoveries of elements stole a long period of time. As a matter of fact‚ several elements were mentioned in Biblical accounts and Koran. However‚ it was in the 19th century where they get to discover a lot of element. And as the number of
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05 November 2013 Literature Review: Nuclear Chemistry and its Effects on the World In today’s society‚ nuclear chemistry is becoming more and more common and is being used in a variety of ways including for weapons and the medical field but the significance of this type of chemistry is its impact and what it has contributed to the world. Nuclear chemistry is the branch of chemistry concerned with nuclear reactions‚ radioactive substances and is the study of the chemical and physical properties
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Why Most Students Are Using Cigarette? In Fulfillment of the Requirements In English IV Marcus Jonathan N. Perez Ma`am. Raquel Vasquez IV – Hope December 10‚ 2012 Acknowledgement Several people help me how to make a research paper to accomplishing before its deadline. And I would like to acknowledge them here. First ‚ I would like to thank Ma`am. Raquel‚ our english adviser for the assistance and encouragement to pursue to this study.I also wish to thank my classmates
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Chemistry Final Study Guide Matter as anything that has mass and takes up space. Significant figures refers to digits that were measured. When rounding calculated numbers‚ we pay attention to significant figures so we do not overstate the accuracy of our answers. Rules: -All nonzero digits are significant. -Zeroes between two significant figures are themselves significant. -Zeroes at the beginning of a number are never significant. -Zeroes at the end of a number are significant if a decimal
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It’s a rarity that we should come across a laboratory‚ classroom‚ chemistry textbook or lecture theatre that doesn’t contain a periodic table of the elements. It required the immense research and determination of the scientist Dmitri Mendeleev to show us that all elements followed a natural form and provided us with the first decent periodic table. There are 111 elements recognised today by IUPAC and they are arranged in the periodic table in horizontal groups and vertical periods. The eight groups
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