General Chemistry I Exam 1 Study Gide
General Chemistry I Exam 1 Study Gide CHEM - 10060 - 001
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This 4 page Study Guide was uploaded by Nick Manning on Wednesday January 27, 2016. The Study Guide belongs to CHEM - 10060 - 001 at Kent State University taught by TBA in Fall 2015. Since its upload, it has received 71 views. For similar materials see GENERAL CHEMISTRY I in Chemistry at Kent State University.
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Date Created: 01/27/16
General Chemistry I Study guide for Exam 1 in Chem-10060 on Friday, th February 19 over Chapters 1-4. CHAPTER 1 Important to know: SI units- conversion, prefixes, (factors not given!) Convert between volume, mass, and density o D=m/v o Volume and Density with displacement = putting an item in a graduated cylinder of water and measuring how much the water moves up Convert between temperature units o F=(9/5)*C + 32 o C= (F-32)*5/9 SIGNIFICANT FIGURES & SIG FIG RULES o Addition/ Subtraction- # of places after the decimal o Multiplication/ Division- # of digits after the first nonzero digit Ex: 13.41 = 4 sig figs 15 = 2 sig figs 13.00 = 4 sig figs CHAPTER 2 Atomic structure o Dalton & Rutherford models Element Info o Name from symbol o Symbol o # of protons, neutrons, electrons o Atomic mass o Relative atomic mass from isotopic abundance = Average atomic weight from table Ion info o # of protons, neutrons, electrons o Charge Periodic Table o Groups = vertical columns o Period = horizontal rows o ID elements from table o Charge/ covalent bonds element will form Number of columns away from Noble Gas Ionic/Covalent Compounds o POLYATOMIC IONS o Which Metals need Roman Numerals & which don’t ALL Transitions except Ni, Ag, Zn, Cd, Pb, Sn o Name any ionic/covalent compound given formula CHAPTER 3 Write a balanced/ be able to balance a chemical equation Find molar mass and % composition given chemical formula o Use periodic table! Empirical Formula o What it is and how to find it from Mass or % composition Molecular Formula o What it is and how to find it from given mass data and molar mass Convert between moles, mass, or # of particles o Molar Mass = g/mol, symbol = M o Avogadro’s Number: 1 mole= 6.022x10^23 entities Only use when question asks for number of Atoms Molecules Particles Entities Find amount of reactant and product used or formed based on a balanced equation o Ratio of moles (Example 2 mols Ca/1 mol C; found in the numbers in front of the symbols of elements in a reaction) Know to find limiting/excess reagents o Calculate mass of product that could possibly be formed in this scenario Know % Yield o (Actual yield/ Theoretical yield) x 100% Combine a series of reactions into one all-inclusive reaction o use this for mass/mole calculations Molar concentration, given mass of solute & volume of solution o M= Moles solute/Liters of solution o MOLARITY, formula above o Convert between moles, mass, volume, molarity o Dilution Calculations M1V1=M2V2 CHAPTER 4 Understand why ionic substances conduct electricity when dissolved in solution but not when solid o When the substance is put in a solution, the structure breaks down and electricity can be conducted Why molecular substances are non-electrolytes in solution o Molecular structures are fixed so the H2O cannot tear them apart Find out if an ionic substance is soluble or insoluble (solid) based on solubility rules o Know the solubility rules Write a balanced equation to depict dissociation of a soluble ionic substance Balanced equation for mixing two ionic substances o Identify precipitates o Molecular, total ionic, and net ionic equations Molecular- basic equation, shows two solutions as two solutions Total Ionic- separates the components of each solutions Net Ionic- equation without spectator ions Spectator Ions- Ions that are present in the same form in both the reactant equation and the product equation
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