Tour of the Chemistry Lab and Lab Equipment

1. Tour of the Chemistry Lab and Lab Equipment Room 2203 Bow High School

2. Lab Equipment • Your lab equipment should: • Be clean before using it. • Be checked (if glassware) for cracks, broken edges, and “stars” – discard if damaged. • Be washed, dried, and carefully stored in the proper place when done using it.

3. Keep our lab area neat and clean!

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!

5. 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) Beaker .The white section is for you to LABEL the contents in pencil

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

7. Florence Flask Rarely used in first year chemistry, it is used for the mixing of chemicals. Narrow neck prevents splash exposure.

8. A graduated cylinder is used to measure volumes of liquids Note the rubber “bumpers”, and also the size. Graduated Cylinder Others that are smaller may not have “bumpers”, but have reinforced glass.

9. Graduated Pipet A graduated pipet measures and delivers exact volumes of liquids Use with the pipet pump.

10. Pipette and Pipet Pump Use the wheel To draw the Liquid up Depress the lever To release all of The liquid at once

11. Test Tubes – we commonly use 2 sizes: 18 x 150 mm Ignition Tube (25 x 200 mm) 13 x 100 mm Test tubes are used to mix chemicals, and also to heat chemicals.

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.

13. Test tube brushes are used to clean test tubes and graduated cylinders. Test Tube Brushes Small test tube brush Forcing a large brush into a small test tube will often break the tube. Don’t worry about drying the inside of a test tube. Large test tube brush

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.

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.

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.

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.

18. 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. Stirring Rod Stir with this end.

19. Dropper Pipet A dropper pipet is used to transfer a small volume of liquid, usually one drop at a time.

20. Drying Rack Clean glassware goes upside down to dry

21. Gas Shut Off Valve Located behind the door In the hallway ON: as shown OFF handle is perpendicular To pipe

22. Mortar and Pestle Used to Grind solids Into powers VERY low tech!

23. Balances Used to measure mass

24. Volumetric Flask Very precise Volume measurement Each flask Measures only One volume Used for making solutions

25. Wooden Splint

26. Forceps Forceps are used to hold or pick up small objects.

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.

28. Filter Paper

29. 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 Wash Bottle Distilled Water During use, keep the bottle upright as shown, since ours have a tube that goes to the bottom of the bottle.

30. Weighing Boat • 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. • Never put chemicals directly on the balance scale – it leaves residue and can harm the balance

31. Spatula Spatulas are used to dispense solid chemicals from their containers. Chemicals should never be transferred with your bare hands.

32. Scoopula Used more often than The spatula The shape allows Easy pick up of solids

33. 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. Beaker Tongs

34. Burner Burners are used for the heating of nonvolatile liquids and solids. Hot plates will be used to gently heat any flammable chemicals.

35. Evaporating Dish The evaporating dish is used for heating stable solid compounds and elements, as well as for evaporating nonvolatile solutions.

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.

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.

38. Funnel Support Allows you to run several Filtrations at once Attaches To ring stand

39. Crucible Tongs For handling hot crucibles; also used to pick up other hot objects - NOT to be used for picking up beakers!

40. Ringstands and their Components Ringstands are a safe and convenient way to perform reactions that require heating using a lab burner.

41. Ringstands and their ComponentsRing 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.

42. Ringstands and their ComponentsTest tube Clamps Test tube clamps are used to secure test tubes, distillation columns, and burets to the ringstand.

43. Ringstands and their ComponentsDouble Buret Clamps Double Buret clamps are used to secure burets (long graduated tubes used in titrations) to the ringstand.

44. Ringstands and their ComponentsWire 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.

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!

46. Always Wear Goggles and Apron

47. Fume Hood Used for experiments Or chemicals that Give off noxious odors

48. Push this handle to turn on the water – it will stay on until you pull it to turn off. Eyewash Station 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. Flush your eyes for 15-20 minutes!

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.

50. Fire Extinguisher Fire Extinguishers are found in the front of the room to the right of the white board and in the hallway.