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Gen Chem 105: Exam 1 Study Guide

by: Christina Binkowski

Gen Chem 105: Exam 1 Study Guide CHE 105

Marketplace > University of Kentucky > Chemistry > CHE 105 > Gen Chem 105 Exam 1 Study Guide
Christina Binkowski

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Study Guide for Exam 1 (Chp 1-3). Took Notes and compiled them and made them more concise
General College Chemistry
Joshua B Owen
Study Guide
General Chemistry, Chemistry, genchem
50 ?




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This 4 page Study Guide was uploaded by Christina Binkowski on Saturday September 24, 2016. The Study Guide belongs to CHE 105 at University of Kentucky taught by Joshua B Owen in Spring 2016. Since its upload, it has received 4 views. For similar materials see General College Chemistry in Chemistry at University of Kentucky.

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Date Created: 09/24/16
I. 1.3 Classification of Matter A. Definition of matter B. States of matter C. By composition 1. Pure substance a) Element b) Compound 2. Mixture a) Homogenous, heterogenous II. 1.4 Physical and Chemical Changes and Properties A. Definition of physical change=does not alter composition or  identity of substance 1. Properties: odor, taste, color, melting/boiling point,  density B. Definition of chemical change=alters composition or identity of  substances involved 1. Properties: flammability, acidity, toxicity III. 1.5 Energy  A. = the capacity to do work 1. work= directed energy change resulting from  process B. Forms 1. Kinetic 2. Potential 3. Thermal(kinetic) 4. Chemical(potential) C. Law of Conservation of freaking nergy IV. 1.6 Units of measurement Prefix Symbol Meaning Tera T 10 12 Giga G 10 9 Mega M 10 6 kilo k 10 3 deci d 10 ­1 centi c 10 ­2 milli  m 10 ­3 micro u 10 ­6 nano n 10 ­9 pico p 10 ­12 A. Temperature Comparisons 1. K=C+273.15 2. F=9C/5 +32 3. C=5/9(F­32) V. 1.7 Reliability of Measurements A. Sig figs VI. 1.8 Solving Chemical Problems A. Dimensional Analysis B. 1 mi= 1.609 m C. 453.6 g= 1 lb D. 3.8 L =1 gallon VII. 2.3 Modern Atomic Theory A. Law of conservation of freaking mass 1. Rxn, matter no created/destroyed B. Law of Definite Proportions 1. Compounds always have same ratio C. Law of multiple proportions 1. Compounds have diff ratios D. Daltons Atomic Theory 1. Each element is composed of tiny indestructible  particles called atoms 2. All atoms of a given element are identical 3. Compounds are composed of atoms or more than  one element in fixed ratios 4. A chemical reaction involves only separation  combination or recombination of atoms VIII. 2.5 Structure of the Atom A. Experiment 1. Thomson’s cathode ray tube experiment a) Found mass to charge ratio of  electron 2. Millikan’s oil drop a) Charge of the electron 3. Rutherford’s gold foil a) Structure of the atom (1) Positive charge  concentrated in nucleus  (2) Proton has opposite  charge of electron (3) Mass proton 1840X  mass of electrons (4) Electrons in empty  space outside nucleus B. Radioactivity 1. Alpha­ positively charged particles 2. Beta­ electrons 3. Gamma­ high energy radiation, no charge C. The next Atomic Particle 1. Mass ratio of hydrogen to helium was off 2. Must be another particle 3. Chadwick’s experiment a) Put alpha and beta particles through  atom? b) Found neutral particle D. Elements as Defined by Protons 1. Atomic number+ number of protons (Z) 2. Mass number = number of protons and neutrons  (A) E. Isotopes 1. Diff number of neutrons F. Group/Family is verticle G. Period is horizontal H. Cations= lost electron= positive I. anions= gains electrons = negative J. Metalloids+ B, Si, Ge, As, Sb, Te, At IX. 2.8 Atomic Mass A. amu= 1/12 of carbon atom B. Fractional mass thingy C. Molar mass 1. 1 mol is atomic mass but in grams 2. Avagadros X. 3.2 Chemical Bonds A. Bond Types 1. Ionic a) Transfer electrons b) NM and M 2. Covalent a) Share electrons b) NM and NM XI. 3.3 Representing Compounds A. Chemical Formula 1. V. Emperical : lowest ratio B. Molecular Models XII. 3.4 Atomic Level View of Elements A. Atomic Elements 1. Particles are single atoms B. Molecular Elements 1. Particles are multi atom molecules C. Molecular Compounds 1. Only NM particles D. Ionic Compounds 1. NM and M particles/ cations and anions


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