General Chemistry- Week 3 Notes
General Chemistry- Week 3 Notes CHEM 101 - 08
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This 4 page Class Notes was uploaded by Samantha Weller on Saturday September 19, 2015. The Class Notes belongs to CHEM 101 - 08 at Radford University taught by Timothy J Fuhrer in Fall 2015. Since its upload, it has received 53 views. For similar materials see General Chemistry in Chemistry at Radford University.
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Date Created: 09/19/15
Chemistry of Life Week 3 Notes Chapter 2 Continued Polyatomic Ions Polyatomic ions are like molecules but they have a charge and form compounds with ions NH42 Ammonium Formulas of Ionic compounds formula that identi es the smallest neutral unit of a compound The formula of an ionic compound can be deducted by crossing the charges and using those numbers as subscripts reducing if necessary Iron II Chronate F823 C10432 Copper II Sulfate Cu 504 Aluminum Oxide AI23 032 l AI2 03 Aluminum Fluoride AI FINJSH THIS Naming Ionic Compounds Name of cation and name of anion name of compound Li3 PO4 D Lithium Phosphate Na2Cr207 D Sodium dichromate SnOz lTin V Oxide SNO l Tin II Oxide SanblBi FINISH Ionic compounds begin with metal or NH4ammonium Binary Compounds Binary Compound a compound formed by combination of two different elements Naming Step 1 name the rst element in the formula using a pre x if needed to indicate the number of atoms 0 Step 2 name the second element in the formula using an ide ending along with a pre x Conversions 1 Mono 2 Di 3 Tri 4 Tetra 5 Penta 6 Hexa 7 Hepta 8 Oxta 9 Non 10 Dec Examples N02 Nitrogen Dioxide N205 dinitrogen pentoxide N20 dinitrogen monoxide H20 dihydrogen oxide I4 09 tetraiodone nanoxide P4 010 tetraphosphorus decoxide Chapter 3 Mass relationships in chemical relations Balancing Chemical Equations Write the unbalanced chemical equation using the correct chemical formula for each reactant and product 6H20 6C02 l 6C02 C6 H12 06 Sugar in a plant Find suitable coefficients the number placed before formula to indicate how many formula units of each substance are required to balance the equation Blue Added numbers molecules in this case to balance out the equation Fe2 03 3C0 l 2Fe 3C0 With a number in front of 2 elements the one in front closer to the number gets multiplied while the farther element gets added to that number For example 3C0 means you multiply the C by 3 to make 3 Carbon molecules and add 3 to DHSAUDSKA Reduce the coef cients to the smallest possible whole number Example Propane C3H8 burns in Oxygen 02 to produce carbon dioxide and water C3 H8 502 I 3C02 4H20 Chemical Arithmetic Stoichiometry how many molecules massmass conversions Molecular mass sum of atomic masses of all atoms in a molecule Formula mass Sum of atomic masses of all atoms in a formula unit of any compound moecuar or ionic Mole 6022 10 23 particles The number of atoms or molecules in a sample that has the mass in grams listed on the periodic table What is the moeduar wright molar mass of glucose C6H1206 Blood Sugar C H 6 1201 726 12 1008 12096 6 1600 9600180156 l 18016 gmol Molar mass unit gmol