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Chapters 20 & 21
Chapters 20 & 21

... covalent bonds with other atoms Alkane – hydrocarbon that contains only single bonds Homologous series – a series in which adjacent members differ by a constant unit (in the case of alkanes it is 1 C and 2 H)  General formula is CnH2n+2 ...
Chemistry Midterm Review 2006
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... 12. Name five indicators of a chemical reaction. 13. Define the words “reactant” and “product”. In a chemical equation, where are the reactants located? Where are the products located? What separates them from each other? 14. Classify each as a physical or chemical change: food spoiling, water boils ...
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Chemical Bonding Notes for 2016

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chapter03 - FacStaff Home Page for CBU
chapter03 - FacStaff Home Page for CBU

... There are simple carbon compounds that are considered inorganic especially if they do not contain hydrogen, e.g. CO, CO2. Carbon atoms form an enormous variety of structures. ...
Organic and Biochemical Compounds
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Matter is anything that occupies space and has mass. Examples

... front of the first non-metal’s name If there is only on atom of the first non-metal the prefix mono is dropped Write the second non-metal’s name Write the correct prefix in front of the second non-metal and make sure the second nonmetal’s name ends in ide Example: ...
Chapter 2 2012
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Organic Compounds

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Lecture 4 - Winthrop Chemistry, Physics, and Geology

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Eötvös Loránd Science University

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THE USE OF MOLECULAR MODELS IN ORGANIC CHEMISTRY

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Chapters 9 and 10

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ExamView - sch4u organic test.tst

... 40. “Of the more than 10 million compounds known, at least 90% are molecular compounds of the element carbon.” Explain this statement. The number of compounds of carbon far exceeds the number of compounds of all other elements combined due to the unique bonding properties of carbon. - carbon is a sm ...
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Organic Notes #5 - RX`ns - Winston Knoll Collegiate
Organic Notes #5 - RX`ns - Winston Knoll Collegiate

... which results in stronger van der Waal’s forces and consequently higher boiling points. When branching occurs the molecules are more spherical which results in less contact, weaker van der Waal’s, and lower boiling points. Alcohols follow a similar pattern, however have higher boiling points over al ...
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Atoms, Molecules and Ions

... − If more than one compound can be formed from the same elements, use prefixes to indicate number of each kind of atom − Last element name ends in -ide ...
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The Infinite Variety of Carbon Compounds

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Electophilic Aromatic Substituion - Towson University
Electophilic Aromatic Substituion - Towson University

...  Controlled by electronegativity and the polarity of bonds in functional groups, i.e. halogens, C=O, CN, and NO2 withdraw electrons through s bond connected to ring.  Alkyl group inductive effect is to donate electrons. ...
Organic Chemistry
Organic Chemistry

... The classification of chemical compounds in to the general areas of organic and inorganic derives from the use of the "mineral, vegetable and animal" designation by the early workers in chemistry. Those compounds derived from living systems were termed organic (about 1777) whereas those derived from ...
lewis acids and bases
lewis acids and bases

... 1. Writing the Lewis structures of LA and LB 2. Using a curved arrow to show the electron pair movement 3. Determining the formal charges on the two atoms ...
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Homoaromaticity



Homoaromaticity in organic chemistry refers to a special case of aromaticity in which conjugation is interrupted by a single sp3 hybridized carbon atom. Although this sp3 center disrupts the continuous overlap of p-orbitals, traditionally thought to be a requirement for aromaticity, considerable thermodynamic stability and many of the spectroscopic, magnetic, and chemical properties associated with aromatic compounds are still observed for such compounds. This formal discontinuity is apparently bridged by p-orbital overlap, maintaining a contiguous cycle of π electrons that is responsible for this preserved chemical stability.The concept of homoaromaticity was pioneered by Saul Winstein in 1959, prompted by his studies of the “tris-homocyclopropenyl” cation. Since the publication of Winstein's paper, much research has been devoted to understanding and classifying these molecules, which represent an additional “class” of aromatic molecules included under the continuously broadening definition of aromaticity. To date, homoaromatic compounds are known to exist as cationic and anionic species, and some studies support the existence of neutral homoaromatic molecules, though these are less common. The 'homotropylium' cation (C8H9+) is perhaps the best studied example of a homoaromatic compound.
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