Preparation of…

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					PREPARATION OF…
Aims: to learn lab vocabulary
PREPARATION OF BENZYL CHLORIDE
 Can you compare these instructions with
  something from everyday life?
 Try to guess at least 5 words that will show up in
  the text.
 Read the text quickly.

 Make a list of all the laboratory equipment you
  can find in the text.
 Make a list of substances mentioned in the text.
 Laboratory equipment:      Substances:
a three-necked flask      benzyl chloride
a reflux condenser        benzene
                          paraformaldehyde
a mechanical stirrer
                          zinc chloride
a gas lead-in tube        water
a water bath              hydrogen chloride
a wash bottle             bicarbonate
a separatory funnel       calcium chloride
a Claisen flask           magnesium sulphate
                          p-xylylene dichlorde
                          diphenylmethane
 Laboratory equipment:    a water bath = vodeno
a three-necked flask =       kupatilo
  trogrli balon            a wash bottle =
a reflux condenser =         ispiralica
  uspravni kondenzator     a separatory funnel =
a mechanical stirrer =       levak za odvajanje
  mehanicka mesalica       a Claisen flask =
a gas lead-in tube = cev     Klajzenov balon
  za dovod gasa, uvodnik
  za gas
VOCABULARY DEVELOPMENT
 Verbs: Find the verbs with the following meaning.
put=
warm up =
dehydrate, desiccate =
to turn liquid to vapour by heating =
 Nouns
a thing used to mix liquids =
a jet, a flow =
krak (srpski) =
the total amount that is produced =
remainder, rest =
VOCABULARY DEVELOPMENT
 Verbs: Find the verbs with the following meaning.
put= place
warm up = heat
dehydrate, desiccate = dry
to turn liquid to vapour by heating = distill
 Nouns
a thing used to mix liquids = stirrer
a jet, a flow = stream
krak (srpski) = arm
the total amount that is produced = yield
remainder, rest = residue
VOCABULARY DEVELOPMENT
 Adjectives
with three necks =
crushed into fine powder =
without water =
quick, fast, sudden =
zasicen (srpski) =
 Adverb

one after another without a break =
VOCABULARY DEVELOPMENT
 Adjectives
with three necks = three-necked
crushed into a fine powder = pulverized
without water = anhydrous
quick, fast , sudden = rapid
zasicen = saturated
 Adverb

one after another without a break = successively
WORDBUILDING
1. Into a 1-liter three-___________ (neck) flask,
  equipped with a reflux __________ (condense), a
  mechanical stirrer (_____________(prefer) of the
  Hershberg type) and a gas lead-in tube, place
  200g of dry benzene.
2. The level of water in the water bath is about the
  same _______________ (high) as the __________
  (react) mixture.
3. Transfer the reaction ______________ (mix) to a
  _____________ (separate) funnel.
4. Distill under normal ___________ (press).
WORDBUILDING
1. Into a 1-liter three-necked flask, equipped with a
  reflux condenser, a mechanical stirrer (preferably
  of the Hershberg type) and a gas lead-in tube,
  place 200g of dry benzene.
2. The level of water in the water bath is about the
  same height as the reaction mixture.
3. Transfer the reaction mixture to a separatory
  funnel.
4. Distill under normal pressure.
LAB HUMOUR
Phrasal verbs
   to be on the point of doing sth = be about
   perform, conduct = carry out
   shout = cry out
   turn up = show up
   be tired or bored with sth = be fed up with
WORD BUILDING

 He begged her repeatedly to stop.
 Do you believe in the existence of ghost?

 Could you buy some more fertilizer for the
  garden?
 My surname has been misspelt – it’s not Static,
  it’s Statkic.
 I remember meeting him, but I just can’t
  visualize him.
COLLOCATIONS

 crucial moment
 express an interest

 lab coat

 get stuck

 an eclipsed conformation

 stick figures

 a vodka shot

 chop sticks
HEALTH WATCH: THE GRADUATE STUDENT'S
GUIDE TO SELF-DIAGNOSIS AND TREATMENT.

According to the leaflet, what causes:
 … a pain in one’s legs

 … a burning feeling in one’s eyes

 … an inability to turn one’s head

 … a burning sensation on one’s head

 … giddiness?
FIND THE WORDS WITH THE SIMILAR
MEANING

 lack = s________         come before = p______
          d________        smell = s_______

 help = a_______          do = p________

 regular = f________      compensate for =

 try = a________           c____________
        b________          vomiting = n_________

 run away = e_______

 restrict = c_________

 bring upon yourself =
  i________
FIND THE WORDS WITH THE SIMILAR
MEANING

 lack = shortage          come before = precede
          deficiency       smell = scent

 help = aid               do = perform

 regular = frequent       compensate for = catch

 try = attempt             up on
         bid               vomiting = nausea

 run away = escape

 restrict = confine

 bring upon yourself =
  incur

				
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posted:3/25/2012
language:English
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