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BIOC 1430 Lecture Notes - Lecture 3: Structural Formula, Chemical Formula, Molecular Geometry

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School
Memorial University
Department
Biochemistry
Course
BIOC 1430
Professor
Parveen C.Sodhi

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Document Summary

Such 2 dimensional representation is of 2 types: expanded structural formula: shows all the atoms in a molecule and all the bonds that connect to them. Propane: condensed structural formula: shows groups of atoms. The central atoms and the atoms connected to them are written as a group. Ch3 ch3 ch3 ch2 ch3. Propane: skeletal structural formula: shows the carbon arrangement but does not show the. Systematic rules exist for naming of organic compounds: rules were formulated by iupac, assigns each compound with a name that not only identifies it but also enables us to draw its structural formula. Prefixes are used to show the number of carbon atoms in continuos-chain alkanes. See table on page 9: to name branched-chain alkanes, the branch attached to the main carbon chain have to be named. These braces are called substituents: a substituent is an atom or group of atoms attached to a chain (or ring) of carbon atoms.

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Related Questions

What is a hydrocarbon? What is the difference between a saturated hydrocarbon and an unsaturated hydrocarbon?Distinguish between normal and branched hydrocarbons. What is an alkane? What is a cyclic alkane? What are the two general formulas for alkanes? What is the hybridization of carbon atoms in alkanes? What are the bond angles in alkanes? Why are cyclopropane and cyclobutane so reactive?

The normal (unbranched) hydrocarbons are often referred to as straight-chain hydrocarbons. WHat does this name refer to? Does it mean that the carbon atoms in a straight-chain hydrocarbon really have a linear arrangement? Explain. In the shorthand notation of cyclic alkanes, the hydrogens are usually ommitted. How do you determine the number of hydrogens bonded to each carbon in a ring structure?

What is a hydrocarbon? What is the difference between a saturated hydrocarbon and an unsaturated hydrocarbon? Distinguish between normal and branched hydrocarbons. What is an alkane? What is a cyclic alkane? What are the two general formulas for alkanes? What is the hybridization of carbon atoms in alkanes? What are the bond angles in alkanes? Why are cyclopropane and cyclobutane so reactive? The normal (unbranched) hydrocarbons are often referred to as straight-chain hydrocarbons. What does this name refer to? Does it mean that the carbon atoms in a straight-chain hydrocarbon really have a linear arrangement? Explain. In the shorthand notation for cyclic alkanes, the hydrogens are usually omitted. How do you determine the number of hydrogens bonded to each carbon in a ring structure?

a. What is a hydrocarbon ? What is the difference between a saturated hydrocarbon and an unsaturated hydrocarbon ? Distinguish between normal and branched alkane hydrocarbons. 

b. What is an alkane ? What is a cyclic alkane ? What are the two general formulas for alkanes ? What is the hybridisation of of carbon atoms in alkanes ? What are the bond angles in alkanes ? Why are cyclopropane and cyclobutane so reactive ? 

c. The normal (unbranched) hydrocarbons are often referred to as straight-chain hydrocarbons. What does this name refer to ? Does this mean that the carbons atoms in a straight chain have a linear arrangement ? Explain. 

d. In the shorthand notation for cyclic alkanes, the hydrogens are usually omitted. How do you determine the number of hydrogens bonded to each atom in a ring structure ?