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Chemistry Midterm Review 100 Multiple choice problems 1 problem sheet (e configuration, lewis dot structures, molar mass etc.) You may use a 4”x6” notecard on your exam provided that notecard is turned in prior to the end of class on the Monday before exams start. Major topics covered Chapter 1 and 2 Sig figs Dimensional analysis (field goals) Metric system Lab safety Lab Equipment Elements Compounds Mixture Homogeneous/heterogeneous Products Reactants Energy Exothermic Endothermic Chapter 3 Subatomic particles Proton Neutrons Electrons Nucleus Mole Electron configuration Quantum numbers Rutherford Thomson Chapter 4 Periodic Table Periodic trends Metals Nonmetals Metalloids Alkali metals Alkaline Earth Metals Transition metals Halogens Noble gases Chapter 5 and 8 Ions Cations Anions Ionic bonding Polyatomic ions Naming ionic compounds Determining ionic formulas Ionic dissociation Molar mass Chapter 6 Covalent bonding Covalent nomenclature Electronegativity Polar Covalent Bond Nonpolar covalent bond Determining the type of bond Lewis dot structures Shapes of molecules Practice problems Draw the orbital diagram, electron configuration for the following elements, draw the electron configuration and condensed electron configuration (circle electron w/ given quantum numbers, and circle your own) W- 3, 2,1,+½ S- 2, 1, 0, –½ Cu 2,1,-1 –½ Rb- 3, 2, 2, +½ Element Symbol Zirconium Bromine Magnesium Silicon Atomic number Mass Number protons 40 12 14 80 24 neutrons 51 35 14 electrons Determine the formula of the following compound and show the ionic dissociation. Potassium sulfide Magnesium chlorate Ammonium iodide Aluminum sulfate Mole Problems How many moles are in 320 g of ammonium carbonate? How many grams are in 5.23 mol of C3H8? How many grams are in 5.1 mol of sulfur hexachloride? How many moles are in 12.5 g of Nitrogen trichloride? Empirical formulas and percent composition Determine the percent composition of Li3BO3 Determine the percent composition of C2H5OH What is the empirical formula of something that is 11.6% N and 88.4% Cl What is the empirical formula of something that is 35.9 % Al and 64.1 % S Name the compound, draw the Lewis dot structures for the following compounds And determine the shape Mg(NO2)2 (shape of nitrite) NH4OH NI3 C2H3F