General Chemistry I
General Chemistry I CHEM 1110
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This 6 page Class Notes was uploaded by Justus Shields on Wednesday September 23, 2015. The Class Notes belongs to CHEM 1110 at Middle Tennessee State University taught by Amy Phelps in Fall. Since its upload, it has received 13 views. For similar materials see /class/213196/chem-1110-middle-tennessee-state-university in Chemistry at Middle Tennessee State University.
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Date Created: 09/23/15
Chemistry 1110 Notes Important to see chemistry in 3 ways macroscopic microscopic particular symbolic MATI39ER mixtures heterogeneous Homogeneous compounds Pure substances elements Compounds 0 Chemically bonded o Fixed ratio Solutions 0 Physicalchange o Variableratio DIATOMIC ELEMENTS Nitrogen oxygen uorine chlorine bromine iodine hydrogen If solutions become cloudy then a precipitate WILL form SIG FIGS Everything you read plus 1 estimated place You HAVE to estimate one decimal place 1 sig fig is always a problem Pure substances Elements and compounds In normal chemical reactions the protons do not change The only kind of reaction that allows the protons to change is a nuclear reaction If the neutrons change it is an isotope MassofPamp N 14 39r 12 s mbol C C 4 6 6 Atomic number Isotopes Protons and neutrons are in the nucleus Electrons are not in the nucleus Ions charged particles change in electrons Cations more protons than electrons Anions more electrons than protons The identity of an element is tied up in its protons Metal Element do not hold an extra charge metallic bonding Water soluble and Conduct metalnonmetal compounds ionic bonding Nonconductors nonmetals covalent bonding Bonding 0 Has everything to do with how elements behave at the macroscopic level 0 Metallic bonding the bonding in metals 0 lonic bonding is formed by electrostatic attraction 069 I Formed by the transfer ofelectrons I cation and anion I no real bond in an ionic bond not held together by anything I ionic bonds for solid crystals at room temperature 0 covalent bonds share their electrons with each other to the benefit of both I the only one that forms molecules comes in solids liquids and gases I nonpolar equal sharing or polar nonequal sharing To conduct electricity you must have charged particles that are able to move All elements after number 83 are radioactive and every element before 83 has at least one type of radioactive isotope Binary Compounds Sodium Chloride NaCl Lithium Chloride LiCl Carbon Tetrachloride CCI4 Magnesium Oxide MgO Sulfur Dioxide 02 Carbon Monoxide CO Carbon Dioxide C02 Magnesium Chloride MgClz Sodium Sulfide NaS Aluminum Chloride AlClg Dinitrogen Tetrachloride NZO4 Nitrogen Dioxide NO2 ron Oxide Fe203 Copper Chloride CuClz Always ends in ide Copper Chloride CuCl Nonmetals use prefixes mono di tri tetra Never use a prefix on the first element unless there is more than one Molar mass a number that is the same throughout It is NOT mass 1 mole 6022 1023 Empirical formula smallest whole number ration of atoms in a compound Molecular formula the actual number of each atom in the compound Hydrogen Combustion va quotquotquotquotquotquotquotquotquotquotquotquotquotquotquotquotquotquotquot quotgt H20 lgl C02 lgl CH4 202 gt2Hzoco2 Synthesis Composition 4K5 l39 OZlGl quotquotquotquotquotquotquot quotgt ZKzo 15p Element Element gt Compound Decomposition Compound gt Element Element Electrolysis ZHZOlLl quotquotquotquotquotquotquotquotquotquotquot quotgt 2H216l0216 Single Replacement Element Compound 9 Compound Element A BC 9 AC B Cu0 5 2AgN0 13 AG 9CuZN039132 AG 2 Ag s Double Replacement NaCl AQ AgN03 AQ9AgCI 5 Na NOMAQ AB CD9 AD BC
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