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Topic: Florence flask

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Laboratory flask

Gas syringe

Laboratory

Laboratory equipment

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Thistle tube

Laboratory glassware

Buchner flask

Burette

Erlenmeyer flask

Buchner funnel

Beaker

Volumetric flask

Microtiter plate

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	Flask - LoveToKnow 1911
		"Flask" is also used in metal-founding of a wooden frame or case to contain part of the mould.
		The word "flagon," which is by derivation a doublet of "flask," is usually applied to a larger type of vessel for holding liquor, more particularly to a type of wine-bottle with a short neck and circular body with flattened sides.
		The word is also used of a jug-shaped vessel with a handle, spout and lid, into which wine may be decanted from the bottle for use at table, and of a similarly shaped vessel to contain the Eucharistic wine till it is poured into the chalice.
	www.1911encyclopedia.org /Flask (235 words)

	Florence flask - Wikipedia, the free encyclopedia
		A Florence flask (also known as a round bottom flask or a boiling flask) is a piece of laboratory glassware.
		It is a round or flat-bottom flask with a long neck.
		Laboratory flasks (Erlenmeyer flask, Florence flask, Volumetric flask, Büchner flask)
	en.wikipedia.org /wiki/Florence_flask (122 words)

	FLASK - LoveToKnow Article on FLASK (Site not responding. Last check: 2007-11-05)
		Flask is also used in metal-founding of a wooden frame or case to contain part of the mould.
		The word flagon, which is by derivation a doublet of flask, is usually applied to a larger type of vessel for holding liquor, more particularly to a type of wine-bottle with a short neck and circular hotly with flattened sides.
		The word is also used of a jug-shaped vessel with a handle, spout and lid, into which wine may be decanted from the bottle for use at table, and of a similarly shaped vessel to contain the Eucharistic wine till it is poured into the chalice.
	34.1911encyclopedia.org /F/FL/FLASK.htm (239 words)

	Erlenmeyer flask - Wikipedia, the free encyclopedia
		The main advantages in an Erlenmeyer flask are that it is less likely to tip over than a Florence flask and the smaller neck slows evaporative loss better than a beaker.
		However the main difference is that conical flasks may be stoppered using rubber bungs, so as the contents of the flask may be mixed or transported safely.
		The flask is not usually used when heating substances vigorously, this task usually being left to the Florence flask.
	en.wikipedia.org /wiki/Erlenmeyer_flask (203 words)

	FLASK - Online Information article about FLASK (Site not responding. Last check: 2007-11-05)
		Florence flask ": similarly shaped vessels are used for experiments, andc., in a laboratory; x.z6(3) to a small metal or glass receptacle for See also:
		CUP (in O.E. cuppe; generally taken to be from Late Lat.
		The word "flagon," which is by derivation a doublet of " flask," is usually applied to a larger type of vessel for holding liquor, more particularly to a type of wine-See also:
	encyclopedia.jrank.org /FLA_FRA/FLASK.html (503 words)

	Megalomania's Precursor Section Part 1
		After the addition of methanesulfonyl chloride is complete continue stirring the contents of the flask for 5 hours and maintain the temperature at 5 degrees C. Next add 300 mL of water to the flask and continue to stir the contents vigorously for an additional 15 minutes before discontinuing the stirring.
		Shake the flask until all of the salt dissolves, then extract the solution with several portions of ether.
		By weighing the flask beforehand, and periodically interrupting the flow of chlorine to cool and weigh the flask, the completeness of the reaction can be determined.
	www.roguesci.org /megalomania/synth/synthesis1.html (7258 words)

	Molar Volume of Oxygen (Site not responding. Last check: 2007-11-05)
		Raise the beaker until the water level inside the beaker is the same as in the flask.
		Measure the temperature of the gas in the flask by partially removing the stopper and inserting a thermometer into the vapor.
		The vapor pressure of water at the temperature of the water in the flask is found in the CRC Handbook of Chemistry and Physics available in the lab.
	www.nv.cc.va.us /alexandria/science/MVO00.htm (819 words)

	Whelmer #21: Balloon Vacuum
		As the flask cools, the balloon is drawn into the flask.
		Before you add water to the flask, ask students to describe the contents of the flask (air molecules).
		If any suggest that it is being sucked into the flask (most do), ask them to explain exactly what is pulling the balloon into the flask.
	www.mcrel.org /whelmers/whelm21.asp (684 words)

	Silver Mirror - Tollens Test for Aldehydes
		The flask is stoppered and swirled to evenly coat the flask with the mixture.
		A silver mirror soon coats the flask as the Ag(I) ion is reduced to Ag metal and glucose is oxidized to gluconic acid.
		A silver mirror coats the flask because the Ag(I) ion is reduced to Ag(0) as Ag(I) oxidizes glucose to gluconic acid.
	jchemed.chem.wisc.edu /JCESoft/CCA/CCA5/MAIN/1ORGANIC/ORG12/TRAM12/D/0384525/THUMBS.HTM (136 words)

	Lab Equipment
		The Evaporating Dish is used to heat and evaporate liquids.
		Tongs are used to hold many different things such as flasks, crucibles, and evaporating dishes when they are hot.
		The Volumetric flask is used to measure one specific volume.
	library.thinkquest.org /10429/high/lab/lab.htm (502 words)

	Matt Treadwell (Site not responding. Last check: 2007-11-05)
		Heat the empty florence flask on a hot plate for about 5 minutes first.
		While the candle burns it is using the oxygen that is found inside of the flask, it is heating and expanding the air inside of the flask.
		As a result of less air molecules (oxygen and nitrogen) and the cooler temperatures found in the glass flask, this causes the air pressure inside to decrease.
	www.elmhurst.edu /~chm/demos/MagicCandle.html (380 words)

	The Ammonia Fountain (Site not responding. Last check: 2007-11-05)
		A 1-litre round-bottom Florence flask is filled with the dry gas (collection under the hood) by downward displacement of air.
		The open end of the long glass tube is placed into a battery jar or beaker which holds approximately 1-1/2-2 liters of water by positioning the inverted Florence flask in the ring attached to a ring stand.
		Dry HCl may be prepared by gently heating 15 g of NaCl with 20 ml of concentrated sulfuric acid in a 5900-ml Florence flask fitted either with a dropping funnel or the conventional thistle tube.
	educ.queensu.ca /~russellt/notes/fountain.htm (309 words)

	Molecular Weight of a Volatile Compound (Site not responding. Last check: 2007-11-05)
		Excess vapor escapes until the pressure of the vapor inside the flask equals that of the atmosphere outside.
		The mass of the vapor is determined by removing the flask from the waterbath, allowing it to cool, weighing the flask and condensed liquid, and subtracting the mass of the empty flask.
		Remove the flask from the water bath by loosening the clamp from the supporting rod and moving it upward.
	wwwchem.csustan.edu /chem1102/molwt.htm (759 words)

	[No title] (Site not responding. Last check: 2007-11-05)
		The flask is fitted with a 1-hole rubber stopper and delivery tube, the latter placed into a large reservoir of water.
		The flask nearly fills with water which is now colored blue by dissolved copper (II) ion and no evidence of the pennies remains.
		Water is drawn into the flask initally because of the cooling of the gases and reduced internal pressure.
	scnc.lsd.k12.mi.us /~eastchem/demonstrations/iraremsen.html (716 words)

	The Blue Bottle (Site not responding. Last check: 2007-11-05)
		One solution is divided between two containers (flasks) such that one container is nearly full and the other nearly empty.
		Pour from the filled flask into the partially filled flask and swirl the contents of both flasks vigorously.
		In a sealed flask, once all of the oxygen is used up, there is no longer a changing of the color.
	www.cci.unl.edu /Chemistry/DoChem/DoChem006.html (692 words)

	Dihydrogen Diffusion
		An apparatus is constructed so that dihydrogen is able to diffuse into a flask and thereby increase the gas pressure forcing liquid to be expelled from the flask through an exit tube.
		Describe the change in pressure in the flask with blue water when the hydrogen gas is first removed from the diffusion cup.
		This pressure increase accounts for both the expulsion of the water from the apparatus when dihydrogen is first applied and the sucking in of air when the dihydrogen is first removed.
	dwb.unl.edu /chemistry/dochem/DoChem086.html (562 words)

	Experiment 5a
		Swirl the flask and occasionally rinse its sides with distilled water from your wash bottle; it is also good to rinse the tip of the burette.
		As the titration progresses, the pink coloration will persist for longer periods when the flask is swirled.
		As the endpoint is approached, "partial drops" of base may be added by carefully dispensing a small drop onto the burette tip and washing it into the flask with the wash bottle.
	core.ecu.edu /chem/chemlab/exper5a/procedures.htm (799 words)

	Flask Eye Model (Site not responding. Last check: 2007-11-05)
		The flask + converging lens are used to model the eye, some defects, and the use of corrective lenses.
		Move the lens toward or away from the flask to model far- and near-sightedness.
		Set up the flask, lens, and projector so the beam converges at the back of the flask with the lens just beyond the front of the flask.
	www.oberlin.edu /physics/catalog/demonstrations/optics/eyemodel.html (160 words)

	A Florence View Bed and breakfast Florence - News and articles
		Due to the wine's relative cheapness, its easy-drinking qualities, and the frequent use of the empty fiasco as a candleholder, Chianti is very strongly identified with Italian American cuisine, especially the "red sauce" variety pioneered by southern Italian immigrants in the late 19th and early 20th century.
		The floor of the church was laid in marble in the 16th century.
		During its long history, this cathedral has been the seat of the Council of Florence (1439), heard the preachings of Girolamo Savonarola and witnessed the murder of Giuliano di Piero de' Medici on 26 April 1478 (with Lorenzo Il Magnifico barely escaping death).
	www.bed-breakfast-florence.com /blog/blog.htm (2200 words)

	Pesticides
		Materials a variety of fresh fruits and vegetables petri dishes water vegetable oil florence flask a variety of pesticide containers naphthalene data sheets damaged fruits/vegetables/leaves labels graduated cylinders two small stuffed animals exactly alike sewing needle thread fl tape two small plants exactly alike wood splints, cotton balls, paper, cotton cloth Recommended Strategy Preplanning 1.
		Pour about 20 mL of the vegetable oil into a florence flask and label it "human body fat".
		Pour about 20 mL of the water into a florence flask and label the flask H
	www.iit.edu /~smile/ch8803.html (492 words)

	Synthesis of (Site not responding. Last check: 2007-11-05)
		Connect a Claisen adapter to the flask; attach a reflux condenser to the side arm, and a thermometer adapter to the straight arm.
		Connect a Clasien adapter to the flask; attach a reflux condenser to the angled arm, and a thermometer adapter to the straight arm.
		While heating the flask on a vigorously boiling water bath, pass a current of dry chlorine gas into the acetic acid.
	www.erowid.org /archive/rhodium/chemistry/chloroacetic.html (863 words)

	Chapter Flashboard <i>to</i> Flattering of F by Webster's Dictionary (1913 Edition)
		The wooden or iron frame which holds the sand, etc., forming the mold used in a foundry; it consists of two or more parts; viz., the cope or top; sometimes, the cheeks, or middle part; and the drag, or bottom part.
		When there are one or more cheeks, the flask is called a three part flask, four part flask, etc.
		A glass flask, round or pear- shaped, with round or flat bottom, and usually very thin to allow of heating solutions.
	www.bibliomania.com /2/3/257/1197/22665/2.html (347 words)

	Colligative Properties Logic Puzzle
		These solutions were then placed randomly in the following containers: 250-mL beaker, 250-mL Erlenmeyer flask, 600-mL beaker, 500-mL Erlenmeyer flask and a 1-L Florence flask.
		The compound with the lowest molar mass is in the smallest flask.
		The solution with the lowest freezing point is C. Solute B is a common gasoline additive.
	www.sciencegeek.net /Chemistry/taters/colligative.htm (136 words)

	Demonstrations
		Gently heat the flask with a burner for 10-15 s and immediately invert it and place the stoppered mouth into the beaker of hot water.
		Remove the flask, heat it again for a few seconds, and invert it in the beaker of cold water.
		Allow enough of this gas to be formed to displace the air in the flask and stopper the flask.
	intro.chem.okstate.edu /ChemSource/BIO/demon.htm (2192 words)

	Cody Svoboda (Site not responding. Last check: 2007-11-05)
		Demonstration: Shake the flask with your thumb on the stopper.
		Shake the flask and the solution should turn from colorless to a pink color.
		When the indicators react with the oxygen inside the flask, it turns the solution different shades of red and blue.
	www.elmhurst.edu /~chm/demos/ColoredBottle.html (493 words)

	Urban Air Science Bag
		A 500 mL Florence flask would work too.
		You will need to insert a glass tube - the tube should be pulled to a slight taper at the stop and should go into the flask so that it is about 20-30 mm above the bottom of the flask.
		Place you finger on the top of the drawn part of the glass tube for a little while so pressure from the acetone vaporization can build up.
	www.uwm.edu /~tholme/urban_air_science_bag.htm (1035 words)

	Tuscany Villa,Bed&Breakfast Near Florence:Luxury Tuscany Villa Accommodation: Villa Dianella Fucini (Site not responding. Last check: 2007-11-05)
		Villa Dianella Fucini is a beautiful medicean Villa of the XVI century plunged in the relaxing and regenerating landscape of the sweet rolling tuscan hills just a few kilometers away from Florence and Pisa.
		The Villa is surrounded by the vineyards and the olive-trees of the Fattoria di Dianella, that produces wine and olive oil, and by the borgo di Dianella that has several halls for exhibitions, meetings and exclusive happenings.
		In the 50's and 60's the flask of the Chianti Dianella could not miss on the tables of the most famous Taverns and restaurants of Italy...
	www.villadianella.it (323 words)

	Demonstrations
		A polarizing filter should be placed between the laser and the flask unless you are using a polarized laser.
		Add a few drops of fresh silver nitrate and look into the side of the flask and as moving 360 degrees around the flask observe the scattered, polarized light.
		The polarized light intensity as you go around the flask may be measured with a light meter.
	faraday.physics.uiowa.edu /optics/6H50.20.htm (434 words)

	Lab Equipment
		The FLORENCE FLASK is used to hold a liquid during heating.
		This round-bottom flask is very similar to a florence flask.
		The VOLUMETRIC FLASK is used the measure one specific volume of liquid (kind of like a volumetric pipet).
	www.geocities.com /~chemfun/unit1/labequipment/equipment.html (1060 words)

	Lab Equipment
		The advantage to the Erlenmeyer Flask is that the bottom is wider than the top so it will heat quicker because of the greater surface area exposed to the heat.
		The Florence Flask is used for heating subtances that need to be heated evenly.
		The Florence Flask is mostly used in distillation experiments.
	www.cartage.org.lb /en/themes/Sciences/Chemistry/Analyticalchemistry/LabEquipment/LabEquipment.htm (502 words)

	Nasaexplores
		Provide one Florence flask, one beaker (or rubber stopper), 200 grams [g] of sodium acetate crystals, 10 mL of distilled water, and a hot plate per group.
		Be sure the Florence flask is as clean as possible on the inside.
		Have groups remove the flask from the heat and add 10 mL of water to it.
	www.nasaexplores.com /show_912_teacher_st.php?id=040304105155 (919 words)

	Megalomania's Method of Making Picric Acid
		Add 24 mL of phenol and 14 mL of 98-100% sulfuric acid to a round-bottomed 100-mL Florence flask and reflux for 6 hours at 120°C on an oil bath.
		Add this solution to a round-bottomed 2-L Florence flask with 228 mL of benzene.
		Transfer the contents of the flask to another flask and distill it with a steam bath (not steam distillation, simple or fractional will suffice).
	roguesci.org /megalomania/explo/picric_acid.html (990 words)

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