Tour of the Chemistry Tour of the Chemistry Lab and Lab Lab and Lab EquipmentEquipmentRoom 2203Room 2203Bow HighBow High SchoolSchoolLab Lab EquipmentEquipmentYour 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. Keep our lab area neat and clean!Keep our lab area neat and clean!Broken Glass Box and Trash CanBroken Glass Box and Trash CanBroken Glass boxBroken Glass box to to dispose of any broken dispose of any broken glass, instead of the glass, instead of the trash can.trash can.Trash Can Trash Can to to dispose of paper dispose of paper waste only!waste only!BeakerBeakerBeakers hold solids Beakers hold solids or liquids that will not or liquids that will not release gases when release gases when reacted, or are reacted, or are unlikely to splatter if unlikely to splatter if stirred or heated.stirred or heated.Very poor to measure Very poor to measure volume with (+/-5%) volume with (+/-5%) accuracyaccuracyNote the size Note the size capacity (250 mL in capacity (250 mL in this case)this case).The white section is for you to .The white section is for you to LABEL the contents in pencilLABEL the contents in pencilErlenmeyer FlaskErlenmeyer FlaskErlenmeyer flasks Erlenmeyer flasks hold solids or hold solids or liquids that may liquids that may release gases release gases during a reaction during a reaction or that are likely to or that are likely to splatter if stirred or splatter if stirred or heated.heated.Note the size Note the label sectionNote the label sectionFlorence FlaskFlorence FlaskRarely used in first Rarely used in first year chemistry, it year chemistry, it is used for the is used for the mixing of mixing of chemicals. Narrow chemicals. Narrow neck prevents neck prevents splash exposure.splash exposure.Graduated CylinderGraduated CylinderA graduated A graduated cylinder is used to cylinder is used to measure volumes measure volumes of liquids of liquids Note the rubber Note the rubber “bumpers”, and “bumpers”, and also the size.also the size.Others that are smaller may not have Others that are smaller may not have “bumpers”, but have reinforced glass.“bumpers”, but have reinforced glass.Graduated PipetGraduated PipetA graduated A graduated pipet measures pipet measures and delivers and delivers exact volumes exact volumes of liquidsof liquids Use with the Use with the pipet pump.pipet pump.Pipette and Pipet PumpPipette and Pipet PumpUse the wheelUse the wheel To draw theTo draw the Liquid upLiquid upDepress the leverDepress the lever To release all of To release all of The liquid at onceThe liquid at onceTest TubesTest Tubes we commonly use 2 sizes:we commonly use 2 sizes:18 x 150 mm18 x 150 mm13 x 100 mm13 x 100 mmIgnitionIgnition TubeTube(25 x 200 (25 x 200 mm)mm)Test tubes are used to mix chemicals, Test tubes are used to mix chemicals, and also to heat chemicals.and also to heat chemicals.Test Tube HolderTest Tube HolderA test tube A test tube holder is useful holder is useful for holding a test for holding a test tube which is too tube which is too hot to handle.hot to handle.Knowing where Knowing where to to holdhold this piece this piece of equipment is of equipment is important.important.Test Tube BrushesTest Tube BrushesTest tube brushes Test tube brushes are used to clean are used to clean test tubes and test tubes and graduated graduated cylinders.cylinders.Forcing a large Forcing a large brush into a small brush into a small test tube will often test tube will often break the tube. break the tube. Dont worry about Dont worry about drying the inside of drying the inside of a test tube.a test tube.Small test tube brushSmall test tube brushLarge test tube brushLarge test tube brushTest Tube RacksTest Tube RacksTest tube racks are for holding and Test tube racks are for holding and organizing test tubes on the laboratory organizing test tubes on the laboratory counter, and are found in the wall cabinets. counter, and are found in the wall cabinets. Rubber StoppersRubber StoppersRubber stoppers Rubber stoppers (also cork) are used (also cork) are used to close containers to close containers to avoid spillage or to avoid spillage or contamination.contamination.Containers should Containers should nevernever be heated be heated when there is a when there is a stopper in place.stopper in place.Well PlatesWell PlatesWell plates are used Well plates are used when we want to when we want to perform many small perform many small scale reactions at scale reactions at one time.one time.It is like having lots It is like having lots of test tubes of test tubes available at one time. available at one time. Watch GlassWatch Glass A watch glass is A watch glass is used to hold a used to hold a small amount of small amount of solid, such a