Chem

• Organic chemistry Organic compound which mainly comprises the living organisms
• Organic chemistry is the study of carbon containing compound.
• Functional group is a group of atoms that is largely responsible for the chemical behavior of the parent molecule.
• Hydrocarbon is made up of only hydrogen and carbon atoms
• Hydrocarbon

  It is simplest form of organic compound
• Lines are drawn in a zigzag pattern, omitting the carbon and hydrogen symbol.
• Ethane is represented by one line only.
• Branched organic compounds will have additional lines attached to the branched carbon.
• Cyclic compounds take shape of polygons.
• Multiple bond must be shown and the geometry must emphasized
• 1 carbon- meth
• 2 carbon - eth
• 3 carbon - prop
• 4 carbon - but
• 5 carbon - pent
• 6 carbon - hex
• 7 carbon - hept
• 8 carbon - oct
• 9 carbon - non
• 10 carbon - dec
• Branch is tend to be less dense
• Linear is much stronger than Branch
• Cross linked is the chain link from one backbone to another, like a ladder cyclic.
• Cyclic is an intramolecular closure of isolated dienes
• Network

  Are heavily linked to form a complex network of three dimensional link ages.
• Thermoplastic - it becomes pliable or moldable at a certain elevated temperature
• Thermosetting is obtained by irreversibly hardening a soft solid or viscous liquid prepolymer/ crosslink polymers
• Elastomer is rubber like polymers
• Fibers is a long thin thread like polymers
• Nucleic acid

  Serve as the primary information carrying molecules in cells
• Polysaccharide is made up of long chain
• Synthetic polymers

  It can be classified based on their preparation process
• Gas - the energy of attraction is small relative to the energy of motion
• Liquid - the attraction are stronger due to the virtual contact
• Solid - the attraction are relatively higher in motion that the particles remain in position
• Intermolecular forces - the nature and phase are primarily due to the forces among molecules
• Dipole dipole attraction

  Attraction of the positive end of one molecule to a near negative end of another molecule.
• London dispersion forces

  Observable among molecules of non polar substances due to the absence of dipole moment.
• Hydrogen bonding

  Species type of dipole dipole forces
• London dispersion forces

  The partial positive and the partial negative of molecules are attracted to each other.