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Lab Equipment.

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

1 Lab Equipment

2 Balance Digital Triple beam Measures mass Unit is a gram

3 Beakers Hold substances Containers Measure liquid volume
General measurement Different sizes

4 Bunsen Burner Heating device Burns a stream of a flammable gas
Not invented by German chemist Robert Bunsen Named after him Actually an improvement made by his laboratory assistant on an earlier design by Michael Faraday The improvement is called a Tirrill Burner

5 Buret Long, vertical piece of glassware Calibrated on its full length
Stopcock on the bottom Used to dispense known amounts of a liquid Used when precision is necessary Titration experiments EXPENSIVE !!!

6 Crucibles A cup-shaped piece of equipment
Used to contain substances when heating them to very high temps The crucible is usually made of porcelain Usually has a lid

7 Erlenmeyer Flask Widely used glass container Has a narrow neck
Wide base Can be stoppered or swirled Again general measurment Named after Richard Erlenmeyer German chemist, 1861

8 Evaporating Dish Shallow bowl with lip Porcelain
Used to heat and evaporate liquids

9 Forceps Hinged instrument used for grasping and holding objects
Not called “tweezers” in lab Metal or plastic

10 Funnels Cone shaped opening Narrow stem Glass or plastic
Used to separate spoils from liquids Filter paper cones trap solids

11 Graduated Cylinder Expensive Measure liquid volume
Calibrated accurately Bumper guards on many Different sizes

12 Mortar and Pestle A tool used to grind and mix substances
Pestle is a heavy stick whose end is used for pounding and grinding Mortar is a heavy bowl Often ceramic

13 Pipets Dropper pipets Plastic pipets Measuring pipets
Used to transfer small volumes of liquids

14 Pipet Pumps Attaches to pipet Uses wheel to draw up liquid
Accurately and effectively moves liquid into pipet Controls the dispensing of liquids

15 Ring Stand A metal support stand
Consists of a long upright rod attached to a heavy rectangular base Used with rings and clamps Use in supporting laboratory glassware

16 Ring Clamps or Iron Rings
Connect to ring stand Can be used with wire gauze Support a variety of lab glassware Funnels Beakers Crucibles

17 Safety Goggles Used to protect the eyes Worn during all labs

18 Scoopula Metal scoop Used to transfer small amounts of solids

19 Stir Rods Long, narrow rod Generally glass
Used to stir or mix solutions

20 Stoppers Plug openings in glassware
Used to contain liquids in flasks and test tubes Corks and rubber stoppers Different sizes Some have holes Glass tubing Thermometers

21 Test Tubes Finger length glass tube Sealed on one end
Lip on other end for easy pouring Holds small samples, usually liquids Easily heated to boiling Samples easily observed

22 Test Tube Brush Narrow brush Used to clean test tubes Different sizes
Never forced into tube

23 Test Tube Holder AKA test tube clamp Made out of wire Holds test tubes
You hold it in your hand and squeeze on the handles to open the other end

24 Test Tube Rack Can be made of different materials
Can have different shapes Holds test tubes when: A reaction is occurring Observations are made When they are not needed

25 Thermometer Device that measures temperature
The word thermometer is derived from two smaller word fragments: thermo from the Greek for heat meter from Greek, meaning to measure Two important parts: Bulb containing a liquid Scale to measure change

26 Thermometer Not mercury Generally alcohol based liquid Colored
which rises or falls as it expands or contracts with changes in temperature Colored Have roll guard Scales May be two Use Celsius

27 Tongs Crucible tongs Beaker tongs
Used to grab hot or untouchable glassware

28 Volumetric Flask Come in all sizes Narrow neck
Single mark or calibration TC = “To contain” Used to contain or measure a very precise and accurate amount of a liquid Very expensive

29 Wash Bottles Plastic bottle with spout Different shapes or styles
Contain only distilled water unless indicated Used to dispense distilled water To add small amounts to a container To rinse specific glassware

30 Watch Glass A circular, slightly concave piece of glass
Used as a surface to evaporate a liquid Used as a cover for a beaker To prevent dust or other particles from entering the beaker

31 Weighing Boats Disposable plastic dishes Used to hold substances
Placed on balances when weighing

32 Wire Gauze/Pipe Stem Triangle
Used with an iron ring and a ring stand Used to support laboratory equipment while heating wire gauze supports beakers and flasks pipe stem triangle supports crucibles

33 Spot Plate Made of ceramic or plastic
Used to perform reactions on very small amounts of materials

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