Week 5 – Key – Organic Nomenclature, Delivery

      2.

a)      CH[4
]methane[                                                              ]

b)     C[6] H[6]               benzene

c)      CH[3]OH           methanol

d)                 C[3]H[8                     ]propane

e)      CH[3]CH[2]OH    ethanol

f)       HCOOH         methanoic acid / formic acid

g)      CH[3] – CO – CH[3 ]propanone / acetone

h)      C[10]H[8]               napthalene

3.      Read the text and try to fill in the gaps according to the context

The story of hydrocarbons


The classes of hydrocarbons are alkanes, alkenes alkynes and arenes. Alkanes are
        hydrocarbons in which all the bonds are single bonds and they are characterized by the
             molecular formula C[n]H[ 2n+2 .
]Functional groups are the structural units responsible for the characteristic reactions of a
molecule. The functional groups in an alkane are its hydrogen substituents.
The simplest alkane is methane, CH[4] ; ethene is C[2]H[6] and propane is C[3]H8.
                              Constitutional isomers are possible for alkanes with four or more
carbon atoms.
Thus there are two isomers of molecular formula C[4]H[10] .One of these has an
               unbranched carbon chain and is called butane; the other has a branched chain and is
called isobutane. Isobutane is a common name.
Cycloalkanes are compounds / hydrocarbons / alkanes in which a ring is present; their formula is
C[n]H[2n] .


8.



                  Version 2

                                                   Version 2

General appearance

                   scruffy

                                                   smart

Stance and posture


                  hunched

                                                   upright

Hands – position

                  in pockets

                                                   visible and active

Hands – gestures

                  no helpful gestures

                                                   clear, helpful gestures

Eye contact

                  none

                                                   a lot

Facial expression

                  depressed

                                                   concerned, enthusiastic

Movement

                  static – several nervous gestures

                                                   dynamic