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 flask a reflux condenser a mechanical stirrer a gas lead-in tube a water bath a wash bottle a separatory funnel a Claisen flask Substances: benzyl chloride benzene paraformaldehyde zinc chloride water hydrogen chloride bicarbonate calcium chloride magnesium sulphate p-xylylene dichlorde diphenylmethane
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 = 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 200 g 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 200 g 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____ 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