Term 1 - 01 Scientific Inquiry - Laboratory Equipment PDF

LABORATORY EQUIPMENTS BASIC LABORATORY EQUIPMENTS  Beaker Erlenmeyer Flask Beakers hold solids or liquids that will not release Erlenmeyer flasks hold solids or liquids that may gases when reacted or are unlikely to splatter if...

LABORATORY EQUIPMENTS BASIC LABORATORY EQUIPMENTS  Beaker Erlenmeyer Flask Beakers hold solids or liquids that will not release Erlenmeyer flasks hold solids or liquids that may gases when reacted or are unlikely to splatter if release gases during a reaction or that are likely to stirred or heated. splatter if stirred or heated.  Florence Flask Graduated Cylinder Rarely used in first year chemistry, it is used for the A graduated cylinder is used to measure volumes of mixing of chemicals. Narrow neck prevents splash liquids. exposure.  Gas Collecting Bottle Test Tubes We use gas collecting bottles when large volumes of A graduated cylinder is used to measure volumes of gases are produced, and must be collected by the liquids. displacement of water. 13 x 100 mm test tubes 10 x 75 mm test tubes Ignition tube  Test Tube Holder Test Tube Brushes A test tube holder is useful for holding a test tube Test tube brushes are used to clean test tubes and which is too hot to handle. graduated cylinders. Forcing a large brush into a small test tube will often break the tube.  Test Tube Racks Rubber Stoppers Test tube racks are for holding and organizing test Rubber stoppers are used to close containers to tubes on the laboratory counter. Plastic racks may avoid spillage or contamination. melt in contact with very hot test tubes. Containers should never be heated when there is a stopper in place.  Glass Stir Rod Medicine Dropper A glass rod is used to manually stir solutions. It can A medicine dropper is used to transfer a small also be used to transfer a single drop of a solution. volume of liquid (less than one mL). On top of each medicine dropper is a “rubber bulb”  Litmus Paper Forceps Red litmus paper is used to identify bases. Forceps (or tweezers) are used to pick up small Blue litmus paper is used to identify acids. objects.  Funnel Mohr Pipet A funnel is used to aid in the transfer of liquid from A Mohr pipet measures and delivers exact volumes one vessel to another. of liquids.  Wash Bottle Weighing Boat A wash bottle has a spout that delivers a wash Weighing boats are used to weigh solids that will be solution to a specific area. Distilled water is the only transferred to another vessel. liquid that should be used in a wash bottle.  Spatulas Beaker Tongs Spatulas are used to dispense solid chemicals from Beaker tongs are used to move beakers containing their containers. Chemicals should never be hot liquids transferred with your bare hands.  Bunsen Burner Evaporating Dish Bunsen burners are used for the heating of The evaporating dish is used for the heating of nonvolatile liquids and solids. stable solid compounds and elements.  Crucible Clay Triangle Crucibles are used for heating certain solids, The clay triangle is used as a support for porcelain particularly metals, to very high temperatures. crucibles when being heated over a Bunsen burner.  Crucible Tongs Glass Plates For handling hot crucibles; also used to pick up Glass plates provide a surface for semi-micro scale other hot objects. NOT to be used for picking up experiments, such as drop reactions and testing of beakers! acids and bases.  Triangular File Ringstands and their Components Triangular files are used primarily to cut glass rod, a Ringstands are a safe and convenient way to skill that your instructor will share with you when it perform reactions that require heating using a becomes useful. Bunsen burner.  Iron Rings Utility Clamps Iron rings connect to a ringstand and provide a Utility clamps are used to secure test tubes, stable, elevated platform for the reaction. distillation columns, and burets to the ringstand.  Double Buret Clamps Wire Gauze Double Buret clamps are used to burets – long Wire gauze sits on the iron ring to provide a place graduated tubes used in titration. to stand a beaker. On older wire gauze, the white material is asbestos!  Pressed Fiber Pad Strikers A 4” x 4” square of ceramic fiber, it provides a Strikers are used to light Bunsen burners. The flints surface for hot beakers so that the beaker does not on strikers are expensive. Do not operate the striker come in contact with a cold countertop and repeatedly just to see the sparks! shatter. NEXT TOPIC: SCIENTIFIC METHOD