| Videos: 175 results |
Lighting and Adjusting a Gas Burner
Lighting, adjusting, and extinguishing a gas burner are shown. Combustion of methane is demonstrated.
Laboratory Equipment / Apparatus
|
Heating a Test Tube
Proper techniques for heating a test tube containing liquid in a gas burner are demonstrated.
Laboratory Equipment / Apparatus
|
Gas-Burner Safety
Safety concerns for using the gas burner are presented.
Laboratory Equipment / Apparatus
|
Gas Burner
Lighting and adjusting a gas burner, using a burner to heat liquids in glass containers, and burner safety are demonstrated and discussed.
Laboratory Equipment / Apparatus
|
Hot Plate Safety
Safety concerns in using a hot plate are presented.
Laboratory Equipment / Apparatus
|
Hot Plate
The use of a combination hot plate/magnetic stirrer is demonstrated. Safety concerns are discussed.
Laboratory Equipment / Apparatus
|
Reactions: Reflux at Constant Temperature
The technique of refluxing a reaction mixture is demonstrated.
Laboratory Equipment / Apparatus
|
Heating-Cooling
Gas burners, hot plates, steam baths, and ice baths are demonstrated along with the technique of refluxing.
Laboratory Equipment / Apparatus
|
Obtaining a Liquid Sample (Procedures and Mistakes)
These movies are designed to show both appropriate and inappropriate laboratory procedures. They can be used in testing to have student spot errors or select correct procedures.
Laboratory Equipment / Apparatus
|
Pouring
Techniques for pouring liquids and solids are demonstrated.
Laboratory Equipment / Apparatus
|
Solid from Dish to Beaker to Volumetric Flask
Steps in the preparation of a solution include the quantitative transfer of a solid from a weighing dish to beaker, dissolving the solid, transfer of the solution to a volumetric flask, dilution to the mark, and mixing.
Laboratory Equipment / Apparatus
|
Solid from Dish to Volumetric Flask
Steps in the preparation of a solution include the quantitative transfer of a solid from a weighing dish to a volumetric flask, dilution to the mark, and mixing.
Laboratory Equipment / Apparatus
|
Transfer and Dissolve a Solid Sample (Procedures and Mistakes)
Correctly and incorrectly performed steps in transferring and dissolving a solid sample are shown.
Laboratory Equipment / Apparatus
|
Transferring a Solid
Several techniques for transferring solid while weighing and for transferring solid from weighing dish into a solution are demonstrated.
Laboratory Equipment / Apparatus
|
Mohr Pipet
A Mohr pipet is used to transfer liquid samples.
Laboratory Equipment / Apparatus
|
Digital Pipettors
Digital pipettors deliver liquids in volumes from 1 mL to 1 µL in an accurate and reproducible manner.
Laboratory Equipment / Apparatus
|
Quantitative Transfer
Techniques for quantitative transfer of solids and liquids are demonstrated.
Laboratory Equipment / Apparatus
|
Transferring Samples
Techniques for ordinary and quantitative transfer of solids and liquids are demonstrated.
Laboratory Equipment / Apparatus
|
Conductivity Meter
The use of a conductivity meter is demonstrated.
Conductivity |
Laboratory Equipment / Apparatus
|
Is the Balance Door Closed (Procedures and Mistakes)
The balance door must be closed in order to obtain a stable reading. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus
|
Taring (Procedures and Mistakes)
The tare button sets the mass of whatever is on the balance pan to zero. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus
|
Weighing Some Different Masses (Procedures and Mistakes)
Several different masses are weighed on an analytical balance. Some are much too large or much too small if the assignment is to weigh out a 0.5 g sample.
Laboratory Equipment / Apparatus
|
Record Balance Reading (Procedures and Mistakes)
These movies show balance readings recorded correctly and incorrectly.
Laboratory Equipment / Apparatus
|
Top-Loading Balance
Techniques using a top-loading balance to weigh solids are demonstrated.
Laboratory Equipment / Apparatus
|
Weighing Vessels
Various weighing containers are discussed.
Laboratory Equipment / Apparatus
|
Keeping the Balance and Weighing Vessel Clean
The importance of cleanliness of the balance and weighing vessel is discussed.
Laboratory Equipment / Apparatus
|
Avoiding Contamination
Material should not be returned to the reagent bottle.
Laboratory Equipment / Apparatus
|
Top-Loading Balance with Draft Shield
Procedures are demonstrated for using a top-loading balance with a draft shield.
Laboratory Equipment / Apparatus
|
pH Meter
The use of a pH meter is demonstrated.
Laboratory Equipment / Apparatus |
pH
|
pH
The use of pH meters and pH paper to measure the pH of solutions is demonstrated.
Laboratory Equipment / Apparatus |
pH
|
Constructing Mercury Barometers
Barometers are constructed using glass tubes filled with mercury. Two methods are used to fill the tubes and differently shaped tubes are used.
Laboratory Equipment / Apparatus
|
Barometer
The use of a mercury barometer to measure air pressure is demonstrated.
Laboratory Equipment / Apparatus
|
Pressure
Use of a mercury barometer and a McLeod gauge manometer are demonstrated.
Laboratory Equipment / Apparatus
|
Recording Data
A chart recorder records voltage versus time, often from an instrument such as a gas chromatograph or a spectrophotometer.
Laboratory Equipment / Apparatus
|
Spectroscope
The use of a hand-held spectroscope is demonstrated.
Laboratory Equipment / Apparatus |
Spectroscopy
|
Spectronic 20 Spectrophotometer
The use of a Spectronic 20 spectrophotometer is demonstrated.
Laboratory Equipment / Apparatus |
Spectroscopy
|
Single-Beam Recording Spectrophotometer
Techniques involved in using a single-beam UV/visible spectrophotometer are demonstrated.
Laboratory Equipment / Apparatus |
Spectroscopy
|
Spectroscopy
Measuring electromagnetic emissions and transmissions with several different instruments are demonstrated or described.
Laboratory Equipment / Apparatus |
Spectroscopy
|
Sample Preparation
A solid sample is prepared and loaded into a capillary tube before its melting point is measured.
Laboratory Equipment / Apparatus
|
Thermometer
The range of the thermometer and heating rates measured by thermometers are demonstrated.
Laboratory Equipment / Apparatus
|
Mel-Temp
The Mel-Temp melting point apparatus is demonstrated.
Laboratory Equipment / Apparatus
|
Thomas Hoover Melting Point Apparatus
The Hoover melting point apparatus is demonstrated.
Laboratory Equipment / Apparatus
|
Controlling the Temperature
The need and methods to control the heating rate near the melting point of the solid are demonstrated.
Laboratory Equipment / Apparatus
|
Melting Point Apparatus
Equipment and techniques used to measure the melting range of a solid are demonstrated. These include the Mel-Temp and the Thomas Hoover Apparatus.
Laboratory Equipment / Apparatus
|
Temperature
Use of a thermometer is demonstrated with examples including the use of melting point apparatuses and calorimeters.
Laboratory Equipment / Apparatus
|
Rinsing and Filling a Buret
Techniques for rinsing and filling a buret are demonstrated.
Laboratory Equipment / Apparatus
|
Reading a Buret
Examples of reading a buret are presented.
Laboratory Equipment / Apparatus
|
Stopcock
Techniques for using and adjusting stopcocks are demonstrated.
Laboratory Equipment / Apparatus
|
Inspecting the Buret (Procedures and Mistakes)
Students should carefully inspect a buret and stopcock before use. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus
|
Inspect and Adjust the Stopcock (Procedures and Mistakes)
A stopcock should be inspected and adjusted if necessary. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus
|
Rinsing the Buret with Water (Procedures and Mistakes)
Before use, a buret should be inspected, rinsed with distilled water, and washed if necessary. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus
|
Rinsing the Buret with Titrant (Procedures and Mistakes)
The buret walls and tip should be thoroughly rinsed with a small amount of titrant. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus
|
Filling the Buret With Titrant (Procedures and Mistakes)
Alternate methods of filling a buret with and without a funnel are shown. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus
|
Buret Use (Procedures and Mistakes)
Correctly and incorrectly performed steps using a buret are shown.
Laboratory Equipment / Apparatus
|
Mohr Pipet Topics
Techniques for using the Mohr pipet are demonstrated.
Laboratory Equipment / Apparatus
|
Filling a Mohr Pipet (Procedures and Mistakes)
Liquid is drawn into a pipet. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus
|
Rinsing the Mohr Pipet with Sample (Procedures and Mistakes)
The Mohr pipet must be thoroughly rinsed with a small portion of sample solution. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus
|
Using the Mohr Pipet to Transfer Sample (Procedures and Mistakes)
The use of a Mohr pipet to transfer solution is demonstrated. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus
|
Mohr Pipet Use (Procedures and Mistakes)
Correctly and incorrectly performed steps in using a Mohr pipet are shown.
Laboratory Equipment / Apparatus
|
Filling a Volumetric Pipet (Procedures and Mistakes)
Liquid is drawn into a pipet. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus
|
Rinsing the Volumetric Pipet with Sample (Procedures and Mistakes)
The volumetric pipet must be thoroughly rinsed with a small portion of sample solution. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus
|
Using the Volumetric Pipet to Transfer Sample (Procedures and Mistakes)
The use of a volumetric pipet to transfer solution is demonstrated. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus
|
Volumetric Pipet Use (Procedures and Mistakes)
Correctly and incorrectly performed steps in using a volumetric pipet are shown.
Laboratory Equipment / Apparatus
|
3-Way Pipet Bulb
Use of a 3-way bulb to draw liquid into a pipet is demonstrated.
Laboratory Equipment / Apparatus
|
Pipet Bulbs
Standard and three-way bulbs used to fill pipets are demonstrated.
Laboratory Equipment / Apparatus
|
Dissolving Solute and Diluting the Solution
Techniques for dissolving solute and diluting solution in a volumetric flask are presents. Some common errors are also shown.
Laboratory Equipment / Apparatus
|
Filling a Volumetric Flask
Techniques for filling a volumetric flask to the mark are demonstrated.
Laboratory Equipment / Apparatus
|
Using a Volumetric Flask
Use of a volumetric flask is demonstrated.
Laboratory Equipment / Apparatus
|
Loading and Unloading a Centrifuge
Techniques for loading and unloading a centrifuge are demonstrated.
Laboratory Equipment / Apparatus
|
Removing Supernatant and Washing Precipitate
After separating in a centrifuge, the supernatant liquid can be removed from the solid.
Laboratory Equipment / Apparatus
|
Preparation
A chromatography chamber is prepared and the sample to be separated is spotted onto paper.
Chromatography |
Laboratory Equipment / Apparatus
|
Developing the Chromatogram
Paper is placed in the chromatography tank and the chromatogram develops.
Chromatography |
Laboratory Equipment / Apparatus
|
Paper Chromatography
Techniques used in paper chromatography are demonstrated.
Chromatography |
Laboratory Equipment / Apparatus
|
Identify and Interpret
Methods to interpret the chromatogram and identify the separated spots are presented.
Chromatography |
Laboratory Equipment / Apparatus
|
Thin Layer Chromatography
Techniques used in Thin Layer Chromatography are demonstrated.
Chromatography |
Laboratory Equipment / Apparatus
|
Simple Distillation
A simple distillation is demonstrated.
Laboratory Equipment / Apparatus
|
Distillation at Reduced Pressure
Distillation under partial vacuum is demonstrated.
Laboratory Equipment / Apparatus
|
Using a Rotary Evaporator
The use of a rotary evaporator is demonstrated.
Laboratory Equipment / Apparatus
|
Using a Separatory Funnel (Version 1)
Use of a separatory funnel is demonstrated and helpful hints are given.
Laboratory Equipment / Apparatus
|
Using a Separatory Funnel (Version 2)
Use of a separatory funnel to isolate a product of a chemical reaction by liquid extraction is demonstrated.
Laboratory Equipment / Apparatus
|
Example of Extraction of an Acid-Base Indicator
An acid–base indicator is shown to concentrate in the aqueous phase when ionized and in the nonpolar phase when molecular.
Laboratory Equipment / Apparatus
|
Equipment
Equipment needed for gravity filtration is illustrated.
Laboratory Equipment / Apparatus
|
Folding Filter Paper (main)
Several methods of folding filter paper are shown.
Laboratory Equipment / Apparatus
|
Filtering
Several gravity filtration processes are shown.
Laboratory Equipment / Apparatus
|
Gravity Filtration
Gravity filtration techniques are shown.
Laboratory Equipment / Apparatus
|
Assembling Equipment
Too different sets of equipment for vacuum filtration are assembled.
Laboratory Equipment / Apparatus
|
Applying and Releasing a Vacuum from a Vacuum Pump
Vacuum is applied and released using a vacuum pump.
Laboratory Equipment / Apparatus
|
Applying and Releasing a Vacuum from an Aspirator
Vacuum is applied and released using a water aspirator.
Laboratory Equipment / Apparatus
|
Recovering Solid
After filtering, solid is removed from funnel and filter paper.
Laboratory Equipment / Apparatus
|
Vacuum Filtration
Vacuum filtration techniques are shown.
Laboratory Equipment / Apparatus
|
Select the Solvent
Selection of an appropriate recrystallization solvent is demonstrated.
Laboratory Equipment / Apparatus
|
Cool the Solution
In most cases, crystals form as the solution is cooled, but sometimes it is necessary to induce crystallization.
Laboratory Equipment / Apparatus
|
Filter and Dry the Crystals
The crystals are filtered using vacuum filtration and then dried.
Laboratory Equipment / Apparatus
|
Single-Solvent Method
The steps in a single-solvent recrystallization are demonstrated.
Laboratory Equipment / Apparatus
|
Two-Solvent Method
The steps in a two-solvent recrystallization are demonstrated.
Laboratory Equipment / Apparatus
|
Eye Protection
Hazards to eyes in the chemistry laboratory include exposure to chemicals from vapors and splashed liquids, impact from broken glass and other solids in the event of an explosion, and exposure to ultraviolet lamps.
Laboratory Equipment / Apparatus
|
Handling and Mixing Chemicals
An introduction to safe handling and mixing of chemicals is presented. This includes adding water to acid, mixing chemicals in a flask, and mixing chemicals in a separatory funnel.
Laboratory Equipment / Apparatus
|
Handling Glassware
These movies are related to the safe handling of laboratory glassware. They include not putting glassware on the edge of a lab bench, not heating cracked glassware, not touching hot glass, creating a vacuum safely, and making separatory funnel protectors.
Laboratory Equipment / Apparatus
|
Heating and Hot Items
Heat sources and hot items must be used with caution to avoid fires, burns, and other problems. Included here are a demonstration of hot glass, safety concerns with the gas chromatograph, use of boiling stones, and gas burner and hot plate safety.
Laboratory Equipment / Apparatus
|
Loose Clothing, Hair, and Jewelry
Loose clothing, hair, and jewelry present hazards in the laboratory as they can become tangled in equipment, dip into chemicals, or come into contact with a heat source and catch fire. Several examples demonstrate these dangers.
Laboratory Equipment / Apparatus
|
Safe Lab Setting
Here are examples of unsafe laboratory conditions including a cluttered work area, glassware on the edge of a lab bench, an unbalanced centrifuge in operation, food containers, open reagent bottles, and an unsecured gas cylinder.
Laboratory Equipment / Apparatus
|
Safety
Safe and unsafe conditions and practices are shown. Topics include eye protection, handling and mixing chemicals, handling glassware, heating and handling hot items, loose clothing, hair, and jewelry, pipetting, and maintenance of a safe laboratory setting.
Laboratory Equipment / Apparatus
|
Quantitative Transfer of a Solid with a Weighing Spoon
A weighing spoon is used to quantitatively transfer a solid that is being weighed.
Laboratory Equipment / Apparatus
|
Quantitative Transfer of a Solid with a Finger-Held Weighing Bottle
A solid is quantitatively transferred using a finger-held weighing bottle.
Laboratory Equipment / Apparatus
|
Quantitative Transfer of a Solid with a Paper Strap-Held Bottle
A solid is quantitatively transferred using a paper strap-held bottle.
Laboratory Equipment / Apparatus
|
Quantitative Transfer of a Solid with a Spatula
A spatula is used to quantitatively transfer a solid to be weighed.
Laboratory Equipment / Apparatus
|
Quantitative Weighing Errors
Three common errors in weighing are demonstrated: using a container that is too large, improper or inconsistent use of the tare function and failure to open and close the balance door.
Laboratory Equipment / Apparatus
|
Transferring a 25-Milliliter Sample
A 25-milliliter volumetric pipet is used to remove a sample from a volumetric flask and transfer it to an Erlenmeyer flask.
Laboratory Equipment / Apparatus
|
Variations in Technique for Handling Stopcocks
Three techniques for using stopcocks including right and left hand control are demonstrated.
Laboratory Equipment / Apparatus
|
Centrifuging a Sample John W. Moore, Jerrold J. Jacobsen, Lois M. Browne, John F. Zimmerman
The demonstration on this page shows a technique that should not be used by undergraduate chemistry laboratory. This video shows what happens to sample in a centrifuge while the centrifuge is on, and the result of stopping the centrifuge improperly. A narrative is included in this video: The centrifuging process allows the solvent to completely settle out. The jarring caused by hand braking destroys the distinct separation between supernatant and solid.
Separation Science |
Laboratory Equipment / Apparatus
|
Mixing
Mechanical and manual techniques for mixing substances are demonstrated.
Laboratory Equipment / Apparatus |
Quantitative Analysis
|
Magnetic Stirrer
A magnetic stirrer is used to mix liquids. Some possible problems in using the stirrer are presented.
Laboratory Equipment / Apparatus |
Quantitative Analysis
|
Manipulating-Transferring Samples
Laboratory equipment and techniques used to heat, cool, mix, and transfer samples of liquids and solids are shown.
Laboratory Equipment / Apparatus |
Quantitative Analysis
|
Quantitative Weighing of a Solid Sample
Techniques for quantitatively transferring solid while weighing are demonstrated.
Laboratory Equipment / Apparatus |
Quantitative Analysis
|
Analytical Balance
Procedures for using an analytical balance to accurately weigh solid samples are demonstrated.
Laboratory Equipment / Apparatus |
Quantitative Analysis
|
Mass
Three types of electronic balances are demonstrated.
Laboratory Equipment / Apparatus |
Quantitative Analysis
|
Calorimeter
A coffee-cup calorimeter is demonstrated.
Calorimetry / Thermochemistry |
Laboratory Equipment / Apparatus
|
Precision of Measurement
The precision of several types of glassware for measuring volume is demonstrated and discussed.
Laboratory Equipment / Apparatus |
Quantitative Analysis
|
Buret
Techniques required to use a buret are demonstrated.
Laboratory Equipment / Apparatus |
Quantitative Analysis
|
Volumetric Pipet Topics
Techniques for using a volumetric pipet to transfer a known volume of liquid are demonstrated.
Laboratory Equipment / Apparatus |
Quantitative Analysis
|
Volumetric Pipet
Use of volumetric pipets is demonstrated.
Laboratory Equipment / Apparatus |
Quantitative Analysis
|
Pipets
Mohr pipets, volumetric pipets, pipet bulbs, and digital pipettors are demonstrated.
Laboratory Equipment / Apparatus |
Quantitative Analysis
|
Quantitative Preparation of a Solution with a Solid and Deionized Water
Two methods of quantitative preparation a solution from a weighed solid sample are demonstrated.
Laboratory Equipment / Apparatus |
Quantitative Analysis
|
Volumetric Flask
The purpose of the volumetric flask is discussed and its use is demonstrated.
Laboratory Equipment / Apparatus |
Quantitative Analysis
|
Volume
Burets, graduated cylinders, pipets, and volumetric flasks are demonstrated.
Laboratory Equipment / Apparatus |
Quantitative Analysis
|
Measuring
Measurement of electrical properties, mass, pH, pressure, volume, and temperature are demonstrated along with examples of recording data, spectroscopy, and titration.
Laboratory Equipment / Apparatus |
Quantitative Analysis
|
Centrifuge
Centrifuging safety considerations, centrifuging a sample, loading and unloading a centrifuge, removing the supernatant, and washing the precipitate are discussed and demonstrated.
Laboratory Equipment / Apparatus |
Separation Science
|
Gas Chromatograph
Operation of a gas chromatograph is demonstrated.
Gas Chromatography |
Laboratory Equipment / Apparatus
|
Distillation
Here we consider distillation including simple distillation, distillation at reduced pressure and using a rotary evaporator.
Laboratory Equipment / Apparatus |
Separation Science
|
Extraction
Use of a separatory funnel to carry out extraction is demonstrated.
Laboratory Equipment / Apparatus |
Separation Science
|
Filtration
Gravity and vacuum filtration are demonstrated.
Laboratory Equipment / Apparatus |
Separation Science
|
Recrystallization
Recrystallization procedures using a single solvent and using two solvents are demonstrated.
Laboratory Equipment / Apparatus |
Separation Science
|
Separating and Purifying
Laboratory processes frequently used to separate mixtures or purify substances including centrifuging, chromatography, distillation, extraction, filtration, and recrystallization are demonstrated.
Laboratory Equipment / Apparatus |
Separation Science
|
Quantitative Weighing
Techniques for quantitatively transferring solid while weighing are demonstrated.
Laboratory Equipment / Apparatus |
Quantitative Analysis
|
Quantitative Techniques in Volumetric Analysis
Here are demonstrations of various techniques of quantitative weighing and transferring solids, transferring liquids and volumetric titration.
Laboratory Equipment / Apparatus |
Quantitative Analysis
|
Electrochemical Cells
Techniques involved in measuring the voltage of an electrochemical cell and some common errors in constructing electrochemical cells are demonstrated.
Electrolytic / Galvanic Cells / Potentials |
Laboratory Equipment / Apparatus
|
Measuring Relative Viscosity
The rate of flow of six different liquids through a Mohr pipet is measured.
Liquids |
Physical Properties |
Laboratory Equipment / Apparatus
|
Mistakes in Constructing Electrochemical Cells
These movies are designed to show inappropriate laboratory procedures. They can be used in testing to have student spot errors.
Electrolytic / Galvanic Cells / Potentials |
Laboratory Equipment / Apparatus
|
Weigh a Solid Sample (Procedures and Mistakes)
Correctly and incorrectly performed steps in weighing a solid sample are shown.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Phenolphthalein
Animations show the color change due to phenolphthalein in several acid-base titrations.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Bromophenol Blue
Animations show the color change due to bromophenol blue in several acid-base titrations.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Methyl Orange
Animations show the color change due to methyl orange in several acid-base titrations.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Bromthymol Blue
Animations show the color change due to bromthymol blue in several acid-base titrations.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Alizarin Yellow GG
Animations show the color change due to alizarin yellow GG in several acid-base titrations.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Crystal Violet
Animations show the color change due to crystal violet in several acid-base titrations.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Titration Curves - Colors of Indicators - Animations
These animations show how the indicator color in a titration flask changes as titrant is added.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Titration Curves
Drawing titration curves, titration curves for various types of acid-base titration, and depictions of color change observed during a titration using several different pH indicators are presented.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Titration Techniques
Techniques and concepts important in titrations are demonstrated and discussed.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Prepare the Buret (Procedures and Mistakes)
The buret and stopcock must be inspected and the buret rinsed prior to use. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Obtaining Titrant (Procedures and Mistakes)
Students should obtain the needed amount of titrant in a beaker that was first rinsed with titrant. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Adding the Indicator (Procedures and Mistakes)
It is crucial that indicator be added to the sample to be titrated. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Prepare for Titration (Procedures and Mistakes)
Steps illustrated include obtaining titrant, rinsing a buret, filling a buret, and adding indicator. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Viewing Meniscus At Eye Level
Here is what the student would see if the meniscus were viewed from eye level.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Do Not View Meniscus From Above
Here is what the student would see if the meniscus were viewed from above.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Do Not View Meniscus From Below
Here is what the student would see if the meniscus were viewed from below.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Initial Buret Reading (Procedures and Mistakes)
The meniscus should be viewed from eye level with a consistent background and recorded in the laboratory notebook. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Beginning the Titration (Procedures and Mistakes)
Steps at the start of a titration are shown. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Deliver Five Second Flow (Procedures and Mistakes)
A five second flow of titrant is delivered and several possible results are presented.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Deliver Long Squirt (Procedures and Mistakes)
A long squirt (about 0.7 seconds) of titrant is delivered and several possible results are presented.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Deliver Quick Squirt (Procedures and Mistakes)
A quick squirt of titrant is delivered and several possible results are presented.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Deliver Quickly Flowing Drops (Procedures and Mistakes)
Quickly flowing drops (about 2 per second) of titrant are delivered and several possible results are presented.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Deliver Slowly Flowing Drops (Procedures and Mistakes)
Slow flowing drops of titrant are delivered and several possible results are presented.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Deliver One Drop (Procedures and Mistakes)
One drop of titrant is delivered and two possible results are presented.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Touch off (Procedures and Mistakes)
The last hanging drop of titrant is touched off and rinsed down and several possible results are presented.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Wash Down Titrant (Procedures and Mistakes)
The sides of the flask are rinsed to be sure all titrant delivered is in bottom of the flask and several possible results are shown.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Delivering Titrant (Procedures and Mistakes)
Several techniques for delivering titrant are demonstrated. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Final Buret Reading (Procedures and Mistakes)
The meniscus should be read in the same manner as the initial reading. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Perform Titration (Procedures and Mistakes)
The steps in a titration include reading and recording the initial volume, delivering titrant, observing the endpoint, and reading and recording the final buret volume. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Titration (Procedures and Mistakes)
Correctly and incorrectly performed steps in a titration are shown.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
|
Chromatography
Chromatographic techniques including the gas chromatography, paper chromatography, and thin layer chromatography are demonstrated.
Chromatography |
Separation Science |
Laboratory Equipment / Apparatus
|
Transferring a Liquid
Quantitative transfer of a liquid with a Mohr pipet, a volumetric pipet, and a digital pipettor is demonstrated.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis |
Applications of Chemistry |
Quantitative Analysis
|
Electrical Properties
Use of the conductivity meter and techniques for measuring voltage of electrochemical cells are demonstrated.
Conductivity |
Laboratory Equipment / Apparatus |
Electrolytic / Galvanic Cells / Potentials
|
A Complete Acid-Base Titration
A solid acid is dissolved in deionized water and titrated with sodium hydroxide solution using the color change of an indictor to determine the endpoint.
Laboratory Equipment / Apparatus |
Quantitative Analysis |
Titration / Volumetric Analysis |
Acids / Bases
|
Titration
A large number of movies and images dealing with titration procedures and techniques are presented.
Laboratory Equipment / Apparatus |
Quantitative Analysis |
Titration / Volumetric Analysis
|
Oxidation-Reduction (Redox) Reactions
Demonstrations exploring oxidation/reduction chemistry.
Aqueous Solution Chemistry |
Electrochemistry |
Oxidation / Reduction |
Water / Water Chemistry |
Acids / Bases |
pH |
Conductivity |
Reactions |
Applications of Chemistry |
Descriptive Chemistry |
Electrolytic / Galvanic Cells / Potentials |
Laboratory Equipment / Apparatus
|
