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AP Chemistry

Bonding General concepts

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AP Chemistry

Bonding ? General Concepts Electronegativity: The ability of anatom in a molecule to attract shared electrons to itself. Ionic Bonds Electrons are transferred Electronegativity differences are generally greater than 1.7 The formation of ionic bonds is always exothermic! Determination of Ionic Character Compounds are ionic if they conduct electricity in their molten state Electronegativity difference is not the final determination of ionic character Coulomb?s Law ?The energy of interaction between a pair of ions is proportional to the product of their charges, divided by the distance between their centers? There will be a negative sign on the Energy once calculated?it indicates an attractive force so that the ion pair has lower energy than the separated ions.

AP Chem Notes

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South Pasadena ? AP Chemistry Name ________________________________ Period ___ Date ___/___/___ 2 ? Atoms and Elements ATOMIC STRUCTURE? Parts of Atoms: Most people already know that the atom is made up of three main parts, the _______________ and ______________ in the nucleus and the ______________ somewhere outside of the nucleus. Let?s summarize: proton neutron electron symbol charge location mass size (see below) Let?s make this more visual using information from the Chart of Fundamental Particles. If the proton were 10 cm in diameter? the size of an orange, how big would everything be? object actual size model size model proton 10-15 m 10 cm orange neutron 10-15 m electron 10-18 m atom 10-10 m

Acid Base Reactions

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Chemistry 1210: Introduction to General Chemistry Dr. Gina M. Florio 20 Sept. 2012 Jespersen, Brady, Hyslop Chapter 5A Molecular View of Reactions in Aqueous Solution A solution is a homogeneous mixture in which the two or more components mix freely. The solvent is taken as the component present in the largest amount. A solute is any substance dissolved in the solvent. Definitions CH. 5.1 Example of a Solution Formation of a solution of iodine molecules in ethyl alcohol where ethyl alcohol is the solvent and iodine the solute: CH. 5.1 Crystal of I2 placed in ethanol: A solution of I2 in ethanol: Properties of Solutions: Qualitative Composition The relative amounts of solute and solvent are often given without specifying the actual quantities.

Practice AP Chemistry Exam

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The questions contained in this AP? Chemistry Practice Exam are written to the content specifications of AP Exams for this subject. Taking this practice exam should provide students with an idea of their general areas of strengths and weaknesses in preparing for the actual AP Exam. Because this AP Chemistry Practice Exam has never been administered as an operational AP Exam, statistical data are not available for calculating potential raw scores or conversions into AP grades. This AP Chemistry Practice Exam is provided by the College Board for AP Exam preparation. Teachers are permitted to download the materials and make copies to use with their students in a classroom setting
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