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Mason - CHEM 211 - General Chemistry, Week 1 Reading and In-class

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Mason - CHEM 211 - General Chemistry, Week 1 Reading and In-class

School: George Mason University
Department: Chemistry
Course: General Chemistry 1
Professor: Paul Cooper
Term: Summer 2015
Tags: General Chemistry, Chemistry, and Math
Name: General Chemistry, Week 1 Reading and In-class notes
Description: These notes cover all of chapter 1 as well as what was covered in the first two lectures.
Uploaded: 09/01/2017
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background image CHEM 211  MW 10:30-11:45 AM  Prof. Gregory Foster  Page 1 of 6     Notes for Week of 8/28  I.   Syllabus  a.  Learning assistant office, Planetary Hall 316 – Dani Harrison 
b.  Foster’s appointments are only on Mondays and Wednesdays 
c.  Chemistry tutoring center is in the basement of planetary hall, available anytime 
as a drop in  II.  Chemistry  a.  Involves the study of  i.  The composition, properties, and transformations of matter  ii.  Central theme is that we study observable changes in matter so that we can  understand the unobservable causes  b.  The fundamental properties of matter include  i.  Physical and chemical properties  1.  Physical properties  a.  Things like solid, liquid, gas 
b.  Are intensive, meaning amount doesn’t matter 
2.  Chemical properties  a.  Things like the reaction between iron and oxygen that  forms rust  3.  A physical change caused by heating can usually be reversed by  cooling but this is not true of chemical changes  4.  A chemical change causes a change in substance composition  ii.  What is matter?  1.  Any stuff that has mass and occupies space  a.  Occupies volume  2.  A change in the state or chemical composition of matter involves  two forms of energy  a.  Kinetic and potential energy  III.  Energy  a.  Potential energy  i.  Defined as energy of position  1.  A position of something in a field of force 
2.  Typically gravity 
a.  Mass in a field(gravity) based on distcance  i.  Ex. A pen has more potential energy based on how  high it is off the ground  b.  Kinetic energy  i.  Defined as energy of motion  1.  Mass of the object multiplied by the speed of the object  2.  𝐸 𝑘 = 1 2 𝑚𝑣 2   c.  Total energy of a system is typically defined as Potential energy plus kinetic  energy 
background image CHEM 211  MW 10:30-11:45 AM  Prof. Gregory Foster  Page 2 of 6     i.  Sum of Ek and Ep  IV.  Properties of matter  a.  Can be   i.  Extensive  1.  This is based on amount of matter  a.  Things like mass, volume, heat content  ii.  Intensive  1.  Independent of quantity – does not depend on amount of matter  a.  Things like  i.  Density  ii.  Defined as Mass over volume  iii.  Color  iv.  Temperature  v.  Melting point  1.  Melting point of water for example is 0  degrees Celsius  V.  Classification of matter  a.  Substance  i.  Cannot be physically separated into different forms of matter  b.  Element  i.  Matter that can’t be chemically separated into different forms of matter  c.  Compound  i.  Substance formed from combination of 2 or more elements  d.  Atom  i.  Smallest unit of matter  e.  Molecule  i.  Smallest unit of substance with 2 or more bonded atoms  ii.  Ex H2O  1.  Sodium chloride is not a molecule, it is ionic so it is known as a  formula unit  f.  Mixture  i.  2 or more substances mixed  1.  Heterogenous – you can identify each of the parts of the mixture  a.  Ex glass of water with sand in it  2.  Homogenous – can’t identify the different parts just by looking at  it  a.  Ex seawater 
b.  Are also called solutions 
VI.  Phases of matter  a.  Gas  i.  Characterized by the fact that particles are far apart in space  ii.  These particles at room temperature are moving at about 200 mph  iii.  Higher kinetic energy 

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School: George Mason University
Department: Chemistry
Course: General Chemistry 1
Professor: Paul Cooper
Term: Summer 2015
Tags: General Chemistry, Chemistry, and Math
Name: General Chemistry, Week 1 Reading and In-class notes
Description: These notes cover all of chapter 1 as well as what was covered in the first two lectures.
Uploaded: 09/01/2017
6 Pages 10 Views 8 Unlocks
  • Better Grades Guarantee
  • 24/7 Homework help
  • Notes, Study Guides, Flashcards + More!
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