# data[].attributes.body
>to consider HOW to prepare a five-carbon product from three smaller precursor molecules using the reaction.

# data[].attributes.body
>resemble those of hydrocarbons of similar shape and molecular weight.
>melting points and boiling points increases when the number of carbon increases.
>soluble in organic solvent and insoluble in water.

# data[].attributes.body
>sp hybridized with linear geometry and bond angles of 180 -unsaturated hydrocarbon.
>when sigma bond more bigger than pi bond so the triple bond more easily broken.
>alkynes are more polarized than alkenes because electron more losely held.

# data[].attributes.attachment_caption
to accommodate the triple bond in a ring bending occurs around the sp hybridized c's,destabilizing the molecule.

# data[].attributes.body
unstable : carbon chain must be long enough to connect the two ends of the triple bond without introducing too much strain.

# data[].attributes.body
prepared by elimination reactions,a strong base removes two equivalents of Hx form a vicinal or geminal dihalide to yield an alkynes through two successive E2 elimination reaction.
(Hx,x=Cl,Br,I)

# data[].attributes.body
>IUPAC system,change from -ane ending of parent name to -yne for alkynes.
>choose longest continuous chain and number chain to give the triple bond the lower number.
>the chain is numbered to give the first site of saturation the lower number.
(two triples bond-diynes,
three triples bond-triyes)

# data[].attributes.body
>contain carbon-carbon triple bond.
>consists of 2 pi bond and 1 sigma bond.