Laboratory Apparatus & Uses.pdf

BEAKER Beakers are used for holding LABORATORY various chemicals....

BEAKER Beakers are used for holding LABORATORY various chemicals. Not for measuring precisely. APPARATUS Sizes vary are useful as a reaction container or to hold liquid or solid samples. They are also used to catch liquids from titrations and filtrates from filtering operations GRADUATED ERLENMEYER are for measurement of an amount of CYLINDER liquid. The volume of liquid can be estimated to the nearest 0.1 mL with FLASK are useful to contain reactions or to hold liquid samples. They are also practice. useful to catch filtrates. Used to precisely measure the Used to approximately volume of liquids or run measure the volume various experiments. liquids. Read from the meniscus at eye level. Useful for mixing by swirling Plastic ring always on top if applicable. Sizes vary. Sizes vary FLORENCE FLASK VOLUMETRIC FLASK are used to measure precise volumes of liquid or to make precise dilutions. Used to boil liquids. Used to prepare precise standard solutions. Also used to collect gases, if They are only good for 1 applicable. specific volume. Comes in many sizes Sizes vary. REAGENT BOTTLE RUBBER STOPPERS Used to close flasks and test tubes. Used to store, transport, or view reagents such as acids The holes allow the insertion of or bases. glass tubing, probes, or thermometers as needed by the experiment TEST TUBES AND DISTILLATION RACK FLASK Used to hold chemicals/tubes while experimenting. Used to separate liquids based on boiling point. Not for measuring precisely. BURETTE & BURETTE Burets are for addition of a precise RING STAND & RING CLAMPadded can be determined to the volume of liquid. The volume of liquid CLAMPS nearest 0.01 mL with practice. Used for precisely Base/Pole of set-up for measuring dispensed experimenting. liquids Holds glassware in place for heating or Holds burette to ring evaporating. stand. TEST TUBE BRUSHES TEST TUBE HOLDER Cleaning. Used for carrying or You must clean tubes holding hottest tubes before andafter you us THERMOMETER HOT PLATE Used for measuring Used to heat substances temperature RUBBER TUBING WIRE MESH OR GAUZE Used to absorb and spread the heat of Connecting Bunsen burner to gas flame. valve stem. Keeps glassware from cracking and breaking. Connecting glass tubing together. Part of ring stand set-up.  CLAY TRIANGLE CRUCIBLE AND COVER Used to hold a crucible in place on a Used for heating substances. ring stand. Also helps absorb and spread heat of flame. Can withstand high direct heat. Part of ring stand set-up. CRUCIBLE TONGS BEAKER TONGS Used to carry Used to carry beakers crucible MORTAR AND PESTLE SCOOPULA Used to grind Used to scoop substances into chemical powders. powder or slurry. Not a measuring instrument. STIRRING RODS EVAPORATING DISH Used to stir Used to evaporate substances. excess liquids Clean in between use. WATCH GLASS CENTRIFUGE Used to show Used to separate chemical reactions suspensions (solids from liquid) FUNNEL DROPPER AND BOTTLE Used to safely Used to measure out transfer substances small amounts of from one container liquids for to another. experiments.  WASH BOTTLE TRIPLE BEAM BALANCE Usually contains deionized Measures the mass of an water. object. Handy for rinsing glassware Make certain the balance is and for dispensing small calibrated correctly before amounts ofdH2O for chemical use. reactions DOUBLE PAN BALANCE PIPETTE, PUMP & BULB Used to compare the masses Used to precisely measure of two substances the volume of liquids in small amounts. PIPETTE, PUMP & BULB Used to precisely measure the volume of liquids in small amounts.