Alkenes+and+Alkynes

=@http://www.green-planet-solar-energy.com/images/alkyne-hexyne.gifAlkenes and Alkynes=

__**-An Alkene is a Hydrocarbon which means that it is a molecule made up entirely of Carbon and Hydrogen atoms.** ***1**__
====**__-In__** [|**organic chemistry**]**__, an alkene, olefin, or olefine is an__** [|**unsaturated**] [|**chemical compound**] **__containing at least one__** [|**carbon**]**__-to-__**[|**carbon**] [|**double bond**]__.*5__==== ====**__-The simplest acyclic alkenes, with only one double bond and no other__** [|**functional groups**]**__, form an__** [|**homologous series**] **__of__** [|**hydrocarbons**] **__with the general formula CnH2n__.*5**==== *2 (A 3D model of ethylene,the simplest alkene)*5
 * Examples:**

**An ALKYNE is an organic compound containing a** **carbon-carbon triple bond(CnH2n-2)**
== Alkynes are [|hydrocarbons] that have a [|triple bond] between two [|carbon] atoms, with tthe formula CnH2n-2 *4  *3== ====**-Alkynes are** [|**hydrocarbons**] **that have a** [|**triple bond**] **between two** [|**carbon**] **atoms, with the formula CnH2n-2. Alkynes are traditionally known as acetylenes, although the name //acetylene// also refers specifically to C2H2,**====

=**Rule**= =If a double bond is present, change the " ane " of fhe parent hydrocarbon to " ene" If a bond is present, change the " ane" of the parent hydrocarbon to " yne" =

single

 * __ane__**

double
__ene__

**triple**

 * __yne__**

Alkenes and Alkynes are called //__UNSTURATED__// hydrocarbons
-- have less hydrogen atoms than equivalent alkanes.

Alkanes are called __//SATURATED//__ hydrocarbons
---they cotain the maximum number of hydrogen possible. (Form text P.226) EXAMPLE: *6 start top left :1-butene 1,3-butene trans-2-butene cis-2-butene = =


 * 1:@http://www.green-planet-solar-energy.com/alkene.html
 * 2: http://www.canadaconnects.ca/_chemistry/photos/Ethylene2.png
 * 3: []
 * 4: []
 * 5:http://en.wikipedia.org/wiki/Alkene
 * 6:http://en.wikipedia.org/wiki/Alkyne
 * 6:http://upload.wikimedia.org/wikipedia/commons/b/b1/Iupac-alkene.png