Post on 24-Feb-2016
description
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:
a three-necked flaska reflux condensera mechanical stirrera gas lead-in tubea water batha wash bottlea separatory funnela Claisen flask
Substances:benzyl chloride benzeneparaformaldehyde zinc chloridewaterhydrogen chloride bicarbonate calcium chloride magnesium sulphatep-xylylene dichlordediphenylmethane
Laboratory equipment:
a three-necked flask = trogrli balon
a reflux condenser = uspravni kondenzator
a mechanical stirrer = mehanicka mesalica
a gas lead-in tube = cev za dovod gasa, uvodnik za gas
a water bath = vodeno kupatilo
a wash bottle = ispiralica
a separatory funnel = levak za odvajanje
a Claisen flask = Klajzenov balon
VOCABULARY DEVELOPMENT Verbs: Find the verbs with the following
meaning.put=warm up = dehydrate, desiccate =to turn liquid to vapour by heating = Nounsa 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= placewarm up = heat dehydrate, desiccate = dryto turn liquid to vapour by heating = distill Nounsa thing used to mix liquids = stirrera jet, a flow = streamkrak (srpski) = armthe total amount that is produced = yieldremainder, rest = residue
VOCABULARY DEVELOPMENT Adjectiveswith three necks = crushed into fine powder = without water = quick, fast, sudden = zasicen (srpski) = Adverbone after another without a break =
VOCABULARY DEVELOPMENT Adjectiveswith three necks = three-neckedcrushed into a fine powder = pulverizedwithout water = anhydrousquick, fast , sudden = rapidzasicen = saturated Adverbone after another without a break =
successively
WORDBUILDING1. 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).
WORDBUILDING1. 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 HUMOURPhrasal 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________ d________ help = a_______ regular = f________ try = a________ b________ run away = e_______ restrict = c_________ bring upon yourself
= i________
come before = p______
smell = s_______ do = p________ compensate for =
c____________ vomiting =
n_________
FIND THE WORDS WITH THE SIMILAR MEANING lack = shortage deficiency help = aid regular = frequent try = attempt bid run away = escape restrict = confine bring upon yourself
= incur
come before = precede
smell = scent do = perform compensate for =
catch up on vomiting = nausea