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Lab Equipment. Balance Digital Digital Triple beam Triple beam Measures mass Measures mass Unit is a gram Unit is a gram.

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Presentation on theme: "Lab Equipment. Balance Digital Digital Triple beam Triple beam Measures mass Measures mass Unit is a gram Unit is a gram."— Presentation transcript:

1 Lab Equipment

2 Balance Digital Digital Triple beam Triple beam Measures mass Measures mass Unit is a gram Unit is a gram

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

18 Scoopula Metal scoop Metal scoop Used to transfer small amounts of solids Used to transfer small amounts of solids

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

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

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

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

23 Test Tube Holder AKA test tube clamp AKA test tube clamp Made out of wire Made out of wire Holds test tubes Holds test tubes You hold it in your hand and squeeze on the handles to open the other end 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 be made of different materials Can have different shapes Can have different shapes Holds test tubes when: Holds test tubes when: A reaction is occurring A reaction is occurring Observations are made Observations are made When they are not needed When they are not needed

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

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

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

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

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

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

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