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PREPARATION OF…Aims: to learn lab vocabulary
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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.
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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
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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
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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 =
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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
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VOCABULARY DEVELOPMENT Adjectiveswith three necks = crushed into fine powder = without water = quick, fast, sudden = zasicen (srpski) = Adverbone after another without a break =
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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
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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).
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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.
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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
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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.
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COLLOCATIONS
crucial moment express an interest lab coat get stuck an eclipsed conformation stick figures a vodka shot chop sticks
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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?
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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_________
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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