Slide 1

Tour of the Chemistry Lab and Lab Equipment Room 2203 Bow High School Slide 2 Lab Equipment Your lab equipment should: 1.Be clean before using it. 2.Be checked (if glassware) for cracks, broken edges, and stars discard if damaged. 3.Be washed, dried, and carefully stored in the proper place when done using it. Slide 3 Keep our lab area neat and clean! Slide 4 Broken Glass Box and Trash Can Broken Glass box to dispose of any broken glass, instead of the trash can. Trash Can to dispose of paper waste only! Slide 5 Beaker Beakers hold solids or liquids that will not release gases when reacted, or are unlikely to splatter if stirred or heated. Very poor to measure volume with (+/-5%) accuracy Note the size capacity (250 mL in this case).The white section is for you to LABEL the contents in pencil Slide 6 Erlenmeyer Flask Erlenmeyer flasks hold solids or liquids that may release gases during a reaction or that are likely to splatter if stirred or heated. Note the size Note the label section Slide 7 Florence Flask Rarely used in first year chemistry, it is used for the mixing of chemicals. Narrow neck prevents splash exposure. Slide 8 Graduated Cylinder A graduated cylinder is used to measure volumes of liquids Note the rubber bumpers, and also the size. Others that are smaller may not have bumpers, but have reinforced glass. Slide 9 Graduated Pipet A graduated pipet measures and delivers exact volumes of liquids Use with the pipet pump. Slide 10 Pipette and Pipet Pump Use the wheel To draw the Liquid up Depress the lever To release all of The liquid at once Slide 11 Test Tubes we commonly use 2 sizes: 18 x 150 mm 13 x 100 mm IgnitionTube (25 x 200 mm) (25 x 200 mm) Test tubes are used to mix chemicals, and also to heat chemicals. Slide 12 Test Tube Holder A test tube holder is useful for holding a test tube which is too hot to handle. Knowing where to hold this piece of equipment is important. Slide 13 Test Tube Brushes Test tube brushes are used to clean test tubes and graduated cylinders. Forcing a large brush into a small test tube will often break the tube. Dont worry about drying the inside of a test tube. Small test tube brush Large test tube brush Slide 14 Test Tube Racks Test tube racks are for holding and organizing test tubes on the laboratory counter, and are found in the wall cabinets. Slide 15 Rubber Stoppers Rubber stoppers (also cork) are used to close containers to avoid spillage or contamination. Containers should never be heated when there is a stopper in place. Slide 16 Well Plates Well plates are used when we want to perform many small scale reactions at one time. It is like having lots of test tubes available at one time. Slide 17 Watch Glass A watch glass is used to hold a small amount of solid, such as the product of a reaction. Can also be used as a cover for an evaporating dish or beaker. Slide 18 Stirring Rod The stirring rod is used to: a) manually stir solutions; b) assist in pouring liquids; and c) to transfer a single drop of a solution. Rubber policeman tip is used to remove precipitates. Stir with this end. Slide 19 Dropper Pipet A dropper pipet is used to transfer a small volume of liquid, usually one drop at a time. Slide 20 Drying Rack Clean glassware goes upside down to dry Slide 21 Gas Shut Off Valve Located behind the door In the hallway ON: as shown OFF handle is perpendicular To pipe Slide 22 Mortar and Pestle Used to Grind solids Into powers VERY low tech! Slide 23 Balances Used to measure mass Slide 24 Volumetric Flask Very precise Volume measurement Each flask Measures only One volume Used for making solutions Slide 25 Wooden Splint Slide 26 Forceps Forceps are used to hold or pick up small objects. Slide 27 Funnel A funnel is used to aid in the transfer of liquids from one vessel to another, and will hold filter paper while filtering. Slide 28 Filter Paper Slide 29 Wash Bottle A wash bottle has a spout that delivers a water stream to a specific area. Deionized water is the only liquid that should be used in a wash bottle During use, keep the bottle upright as shown, since ours have a tube that goes to the bottom of the bottle. Distilled Water Slide 30 Weighing Boat Weighing boats are used to weigh solids that will be transferred to another vessel. Weighing boats are used to weigh solids that will be transferred to another vessel. We will also use squares of paper for this purpose throw them away after using. We will also use squares of paper for this purpose throw them away after using. Never put chemicals directly on the balance scale it leaves residue and can harm the balance Never put chemicals directly on the balance scale it leaves residue and can harm the balance Slide 31 Spatula Spatulas are used to dispense solid chemicals from their containers. Chemicals should never be transferred with your bare hands. Slide 32 Scoopula Used more often than The spatula The shape allows Easy pick up of solids Slide 33 Beaker Tongs Beaker tongs are used to move beakers containing hot liquids. Note the rubber coating to improve grip on the glass beaker - do not hold this in a burner flame. Slide 34 Burner Burners are used for the heating of nonvolatile liquids and solids. Hot plates will be used to gently heat any flammable chemicals. Slide 35 Evaporating Dish The evaporating dish is used for heating stable solid compounds and elements, as well as for evaporating nonvolatile solutions. Slide 36 Crucible and cover Crucibles are used for heating certain solids, particularly metals, to very high temperatures. The cover can be used to contain any smoke particles. Slide 37 Clay Triangle The clay triangle is used as a support for crucibles when being heated over a lab burner. It can also be used to support a funnel when filtering. Slide 38 Funnel Support Allows you to run several Filtrations at once Attaches To ring stand Slide 39 Crucible Tongs For handling hot crucibles; also used to pick up other hot objects - NOT to be used for picking up beakers! Slide 40 Ringstands and their Components Ringstands are a safe and convenient way to perform reactions that require heating using a lab burner. Slide 41 Ringstands and their Components Ring Clamp Ring clamps connect to a ringstand, and provide a stable, elevated platform for a beaker to be heated. Will also hold a clay triangle and funnel during filtering. Slide 42 Ringstands and their Components Test tube Clamps Test tube clamps are used to secure test tubes, distillation columns, and burets to the ringstand. Slide 43 Ringstands and their Components Double Buret Clamps Double Buret clamps are used to secure burets (long graduated tubes used in titrations) to the ringstand. Slide 44 Ringstands and their Components Wire Gauze Wire gauze sits on the iron ring to provide a place to stand a beaker. On older wire gauze, the white material was asbestos currently it is a ceramic. Slide 45 Lighter These strikers are used to light lab burners. The flints on strikers are expensive. Do not operate the striker repeatedly just to see the sparks! Slide 46 Always Wear Goggles and Apron Slide 47 Fume Hood Used for experiments Or chemicals that Give off noxious odors Slide 48 Eyewash Station Push this handle to turn on the water it will stay on until you pull it to turn off. Flush your eyes for 15- 20 minutes! The Eyewash is located in the back of the lab in my chemical closed and under the Safety Shower. You will need to summons me for assistance at the Eyewash Station. Slide 49 Safety Shower Lots of water will come pouring out here to rinse chemicals spilled on you. This is the handle to pull to activate the safety shower. Slide 50 Fire Extinguisher Fire Extinguishers are found in the front of the room to the right of the white board and in the hallway. Slide 51 Fire Blanket The fire blanket is to be used when a Person is on fire. Do not use the shower. Ours is located Between the prep Room door and the Fume hood Slide 52 Name the equipment being used to heat this liquid Slide 53 What is going on here? Slide 54 What equipment is used for this titration?