Chapters 11 12 Periodic Table Name __________________ ( ) Class __________ Date _________ History of the Periodic Table Russian chemist Dmitri Ivanovich Mendeleev 1834-1907 Arranged elements in order of increasing atomic masses Elements with similar chemical properties fall into the same vertical column Such an arrangement is the Periodic Table The Periodic Table The Periodic Table is a list of elements arranged in order of ______________ _____________ (__________) ____________. Groups
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0 Standard Molar Enthalpy Change of Neutralisation‚ ΔHonuet | | | 10‚11 | 6.1 The Standard Enthalpy Change of Neutralisation For Strong Acids | | | | and Strong Alkalis | | | | | | | | 6.2 The Standard Enthalpy Change of Neutralisation of Weak Acids and | | | | Weak Alkalis | | | | | | | | 7.0 Standard Molar Enthalpy Change of Atomisation‚ ΔHoat | | | 12 | 8.0 Electron Affinity | | | | | | | 13 | 9.0 Lattice Energy |
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(although the term "lye soap" refers almost exclusively to soaps made with sodium hydroxide) brings about a chemical reaction known as saponification. In saponification‚ the fats are first hydrolyzed into free fatty acids‚ which then combine with the alkali to form crude soap. Glycerol (glycerine) is liberated and is either left in or washed out and recovered as a useful byproduct‚ depending on the process employed.[2] Soaps are key components of most lubricating greases‚ which are usually emulsions
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THE EVOLUTION OF SOAP & DETERGENT INDUSTRY HISTORY Soaps The washing industry‚ usually known as the soap industry‚ has roots over 2000 years in the past‚ a soap factory having been found in the Pompeii excavations. However‚ among the many chemical process industries‚ none has experienced such a fundamental change in chemical raw materials as have the washing industries. It has been generally accepted that the per capita use of toilet soap is a reliable guide to he standard of living for
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Sodium was first discovered by Sir Humphrey Davy in 1807. This element is the 11th element found on the periodic table; located in group 1 and period 3. Its chemical symbol is Na and it is classified as a metal. Metals‚ by definition‚ means that they are elements that are luster‚ lose electrons very easily‚ malleable‚ ductile‚ and are great conductors of heat and electricity. Sodium is found in group 1 of the periodic table because the electronegativity of sodium is very low. This allows it to form
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Properties of Gallium Gallium is a chemical element that is located in Group 13 or the “Boron Group” on the periodic table of the elements. It has the chemical symbol Ga and has an atomic number of 31 meaning it has 31 protons and 31 electrons. The atomic mass of Gallium is 69 meaning it has 38 neutrons. Gallium is a transition metal and was discovered in 1875 by French Chemist Paul Emile Lecoq de Boisbaudran after the element was predicted by Dmitri Mendeleev who created the periodic table of the
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Chemistry Equipment Symbols 1. Test Tube 2. Boiling Tube 3. Beaker 4. Conical Flask 5. Test Tube Holder/ Tongs /Clamp Stand 6. Measuring/Graduating 7. Funnel 8. Pipette Cylinder 9. Spatula 10. Tripod 11. Bunsen Burner 12. Glass Bulb 13. Burette 16. Condenser Pipette Changes of State Filtering Solutions 03-Nov
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What is an Effluent? Effluent is an out flowing of water or gas from a natural body or a man made structure. Effluent is defined by the United States Environmental Protection Agency as “wastewater - treated or untreated - that flows out of a treatment plant‚ sewer‚ or industrial outfall. Generally refers to wastes discharged into surface waters”. The Compact Oxford English Dictionary defines effluent as “liquid waste or sewage discharged into a river or the sea”. Sources of Industrial Effluents
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The elements of this chart are organized in families/groups and periods. The word periodic refers to the way the table is ordered‚ which is in periods and families/groups‚ and it looks like this: The green ones are the non-metals‚ the blue ones are alkali metals‚ the red ones are the alkaline earth‚ the yellow are the transition metals‚ the light blue ones are other metals‚ the purple ones are the metalloids‚ the pink ones are the halogens‚ the brown ones are the noble gases‚ and the gold ones are
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Chemistry All about matter There are three different stages of matter: Solid‚ Liquid and Gas Solid (s): Have a certain volume and shape. “Particles” are arranged in a specific crystalline patter and they only vibrate around fixed positions. Liquid (l): Have a fixed volume‚ but not shape. The particles have some freedom and can move around each other. They collide often. Gas (g): Doesn’t have a fix volume or shape. (Takes up the space where it is) Particles move freely in all space available
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