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Lab Equipment.

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Presentation on theme: "Lab Equipment."— Presentation transcript:

1 Lab Equipment

2 Beaker Beakers hold solids or liquids that will not release gases when reacted or are unlikely to splatter if stirred or heated.

3 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.

4 Volumetric Flask Used to prepare standard solutions of known concentration.

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

6 Liebig condenser Used in distillation to condense vapors to liquid.

7 Distillation Flask Used in distillation to evaporate liquid.

8 Graduated Cylinder A graduated cylinder is used to measure volumes of liquids.

9 Reagent bottles Used to store reagents or chemical solutions.

10 Glass Stopper Used to close the reagent bottle

11 Gas Collecting Bottle We use gas collecting bottles when large volumes of gases are produced, and must be collected by the displacement of water.

12 Test Tubes 13 x 100 mm test tubes Ignition tube 10 x 75 mm test tubes

13 Test Tube Holder A test tube holder is useful for holding a test tube which is too hot to handle.

14 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.

15 Test Tube Racks Test tube racks are for holding and organizing test tubes on the laboratory counter. Plastic racks may melt in contact with very hot test tubes.

16 Rubber Stoppers Rubber stoppers are used to close containers to avoid spillage or contamination. Containers should never be heated when there is a stopper in place.

17 Spot Plates Spot plates are used when we want to perform many small scale reactions at one time. We will use these many times during the year.

18 Watch Glass A watch glass is used to hold a small amount of solid, such as the product of a reaction.

19 Petri dish A Petri dish is used to hold a small amount of solid, such as the product of a reaction.

20 Plastic Dropper Used to dispense small amount of a solution, usually few drops.

21 Medicine Dropper A medicine dropper is used to transfer a small volume of liquid (less than one mL). On top of each medicine dropper is a “rubber bulb”

22 Glass Stir Rod A glass rod is used to manually stir solutions. It can also be used to transfer a single drop of a solution.

23 Mohr Pipette A Mohr pipet measures and delivers exact volumes of liquids.

24 Thermometer Used to measure temperature.

25 Goggles Used to protect eyes during a lab

26 Ring stands and their Components
Ring stands are a safe and convenient way to perform reactions that require heating using a Bunsen burner.

27 Ringstands and their Components Iron Rings
Iron rings connect to a ring stand and provide a stable, elevated platform for the reaction.

28 Ring Stand and the Ring This is how a ring is attached to a stand.

29 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 is asbestos!

30 Ring stand + wire gauze This is how ring stand and wire gauze are used

31 Ring stands and their Components Double Burette Clamps
Double Burette clamps are used to burettes – long graduated tubes used in titration.

32 Double Burette Clamp-Use
This is how a burette clamp is fixed to the stand

33 Burette Used in acid base titration to add acid drop by drop

34 Burette-Burette Clamp and Stand
This is how a burette clamp & a stand is used to hold a burette.

35 Crucible Crucibles are used for heating certain solids, particularly metals, to very high temperatures.

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

37 Clay Triangle The clay triangle is used as a support for porcelein crucibles when being heated over a Bunsen burner.

38 Clay Triangle and the Ring stand
This is the way a Clay triangle is placed on a ring.

39 Clay Triangle - Use This is the way a Clay triangle is used to hold a crucible

40 Ring stands and their Components Utility Clamp
Utility clamps are used to secure test tubes, distillation columns, and burets to the ringstand.

41 Utility Clamp-Use This is how a utility clamp is used.

42 Litmus Paper Red litmus paper is used to identify bases.
Blue litmus paper is used to identify acids.

43 Forceps Forceps (or tweezers) are used to pick up small objects.

44 Funnel A funnel is used to aid in the transfer of liquid from one vessel to another.

45 Buchner funnel For filtering under pressure. (Quick Filtration)

46 Thistle funnel used to add reagents to reaction vessels. generally made of glass

47 Wash Bottle A wash bottle has a spout that delivers a wash solution to a specific area. Distilled water is the only liquid that should be used in a wash bottle.

48 Weighing Boat Weighing boats are used to weigh solids that will be transferred to another vessel.

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

50 Beaker Tongs Beaker tongs are used to move beakers containing hot liquids

51 Bunsen Burner Bunsen burners are used for the heating of nonvolatile liquids and solids.

52 Evaporating Dish The evaporating dish is used for the heating of stable solid compounds and elements.

53 Glass Plates Glass plates provide a surface for semi-micro scale experiments, such as drop reactions and testing of acids and bases.

54 Pressed Fiber Pad A 4” x 4” square of ceramic fiber, it provides a surface for hot beakers so that the beaker does not come in contact with a cold countertop and shatter.

55 Triangular File Triangular files are used primarily to cut glass rod, a skill that your instructor will share with you when it becomes useful.

56 ELECTRONIC BALANCE Used to weigh chemicals. Weighs up to 3 decimal places.

57 TRIPPLE BEAM BALANCE Used to weigh chemicals manually up to 2 decimal places.

58 Beam Balance / Platform balance.
Used to weigh chemicals. Weighs up to 1 decimal place.

59 End of slide show

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