UWL CHM 303 - Structure Determine Properties (2 pages)

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Structure Determine Properties



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Structure Determine Properties

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Review on how structure determines properties in compounds


Lecture number:
1
Pages:
2
Type:
Lecture Note
School:
University of Wisconsin-La Crosse
Course:
Chm 303 - Organic Chemistry Theory I

Unformatted text preview:

CHM 303 1st Edition Lecture 1 Outline of Current Lecture Discuss Course Syllabus Objectives and Expectations Chapter 1 Structure Determines Properties Current Lecture View syllabus Chapter 1 Structure Determines Properties Structure A Lewis Structure LS displays possible bonding sequences trigonal B Molecular Geometry MG example Ex tetrahedral linear planar C Formal Charges D Resonance Forms two or more ways to draw LS MG does NOT change E Bond Molecular Polarity electronegativity This is not everything regarding structure but some of the key aspects Properties A Physical 1 Boiling Point and Melting Point 2 Solubility in water ethanol hexane etc B Chemical 1 Acidity Basicity can also be considered physical 2 Reactivity These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute Ex Compound H O O H H N N H Bond Energy O O 213 kJ mol N N 275 kJ mol H H H H H C C H C C 347 kJ mol H H C C bond is much stronger than O O or N N because there are no lone pairs Carbon A No Lone Pairs sands of still remain this 1 Because of this fact it is possible to have tens of thoucarbons in a single chain together and it will stable No other element is capable of doing B Two Main Forms 1 Diamond cannot be broken due to 3 dimensional lattice that can slide 2 Graphite fused together hexagonal rings form sheets act like a lubricant causing these sheets to



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