Juniata | Chemistry

The following demos may be taught by the mobile educator, or the supplies are available through the Drop off/Pick up service for teachers who have experience performing these demonstrations.

Color Demos

Fire Demos

Color & Fire Demos Quiz / Teacher Notes

Liquid Nitrogen Demos

Liquid Nitrogen Demos Quiz / Teacher Notes

Liquid Nitrogen Ice Cream / Teacher Notes

Safety Demos

Electrochemistry

These labs use Micronta 23-Range LCD Multimeters.

Procedural Labs

*Electrochemistry: Voltaic Cell / Teacher Notes

*Electrolytic Cells / Teacher Notes

*Denotes advanced lab

Electrophoresis

Our Electrophoresis Units are made by Inexpensive Systems. They are specially designed for electrophoresis using cellulose plates.

Procedural Labs

*Electrophoresis of Amino Acids / Teacher Notes

*Electrophoresis of Food Dyes / Teacher Notes

Resources

Introduction to Electrophoresis

*Denotes advanced lab

Environmental

Procedural Labs

Contaminated Water / Teacher Notes

Determining the Phosphate Content in Fertilizers / Teacher Notes

Soil Respiration

Equilibrium

Procedural Labs

*K_sp of Copper (II) Tartrate

*K_sp of Silver Acetate / Teacher Notes

*LeChatelier's Principle / Teacher Notes

*Spectrophotometric Determination of an Equilibrium Constant / Teacher Notes

*Denotes advanced lab

Food

*Acid Content of Fruit Juice / Teacher Notes

*Analysis of Vinegar (and Standardization of NaOH) / Teacher Notes

Candy Chromatography / Teacher Notes

*Electrophoresis of Food Dyes / Teacher Notes

Extraction and Identification of Dyes (Prep-Sep)/ Teacher Notes

Fat Content in Hamburger

Food Calorimetry / Teacher Notes

*HPLC Determination of Caffeine in Soda / Teacher Notes

Microscale Analysis of Vitamin C / Teacher Notes

Mixtures and Compounds / Teacher Notes

Moisture Content of Popcorn -- Statistical Analysis / Teacher Notes

TLC of Food Dyes / Teacher Notes

TLC of Vegetables / Teacher Notes

*UV Analysis of Caffeine in Soda / Teacher Notes

*Denotes advanced lab

Forensics

Procedural Labs

Forensic Paper Chromatography / Teacher Notes

Gas Chromatography

Our 5 GC's are manufactured by SRI and purchased from Buck Scientific. The model we use requires no helium, but uses ambient air. This model is lighter than a traditional GC, which is ideal for transportability. The instrument is run via laptop.

Inquiry-Based Labs

*The Effects of the Size of Molecules on Retention Time / Teacher Notes

*Spiking Analysis of Dry Gas / Teacher Notes

Procedural Labs

Analysis of Mouthwashes / Teacher Notes

*The Effects of the Size of Molecules on Retention Time / Teacher Notes

Fractional Distillation w/ GC Extension / Teacher Notes

Separation of Alcohols / Teacher Notes

*Spiking Analysis of Dry Gas / Teacher Notes

*Verification of Esterification / Teacher Notes

*Denotes advanced lab

Gases

Inquiry-Based Labs

*Identification of an Unknown Gas / Teacher Notes

*Molar Mass of Carbon Dioxide / Teacher Notes

Procedural Labs

Boyle's Law / Teacher Notes

Boyle's Law with Vernier / Teacher Notes - This lab uses the Vernier LabPro® computer interface with LoggerPro® software.

Charles' Law / Teacher Notes

*Identification of an Unknown Gas / Teacher Notes

Microscale Experiments with Ammonia / Teacher Notes

Microscale Experiments with Carbon Dioxide / Teacher Notes

Microscale Experiments with Hydrogen / Teacher Notes

Microscale Experiments with Oxygen / Teacher Notes

*Molar Mass of Carbon Dioxide / Teacher Notes

*Molar Volume of a Gas / Teacher Notes

HPLC

Our two BLC-10/11 Isocratic Liquid Chromatograph HPLC's are quite small and light, and they are run with a laptop. They were purchased from Buck Scientific.

Procedural Labs

*HPLC Determination of Caffeine in Soda / Teacher Notes

Resources

Introduction to HPLC

*Denotes advanced lab

Identification

Inquiry-Based Labs

*Identification of Solutions

*Identification of an Unknown Gas / Teacher Notes

Procedural Labs

Blood Typing / Teacher Notes

*Identification of an Unknown Gas / Teacher Notes

Mystery Solutions / Teacher Notes

*Denotes advanced lab

Infrared Spectroscopy

Our IR100 FT-IR infrared spectrophotometers were purchased from Thermo Nicolet. They are smaller than a traditional FT-IR and are run indepentently.

Procedural Labs

Infrared Spectra of Plastics / Teacher Notes

Infrared Spectrum of a Pure Liquid / Teacher Notes

Infrared Spectrum of a Solid / Teacher Notes

Resources and Activities

Introduction to Infrared Spectrophotometry

Practice Exercises with Infrared Spectrophotometry / Teacher Notes

Resonance Chart for Infrared Spectrophotometry

Kinetics

Procedural Labs

*Kinetic Study of the Reaction of KI with K₂S₂O₈ Using a Spectrophotometer / Teacher Notes

*Rates of Chemical Reactions: Iodination of Acetone / Teacher Notes

*Denotes advanced lab

Microscale Techniques

Procedural Labs

Esterification / Teacher Notes

*Fractional Distillation / Teacher Notes

Microscale Analysis of Vitamin C / Teacher Notes

Microscale Experiments with Ammonia / Teacher Notes

Microscale Experiments with Carbon Dioxide / Teacher Notes

Microscale Experiments with Hydrogen / Teacher Notes

Microscale Experiments with Oxygen / Teacher Notes

Microscale Synthesis of Acetylsalicylic Acid / Teacher Notes

Simple Distillation / Teacher Notes

Resources

Introduction to Microscale Techniques

*Denotes advanced lab

Nanotechnology

Nanotechnology is the study of objects that measure 1nm to 100nm in one or more dimensions. We have an atomic force microscope (AFM) from Nanosurf that images nano-sized objects.

Procedural Labs

*Gold Nanoparticles: Synthesis, Spectroscopy, and Atomic Force Microscopy / Teacher notes

*Silver Nanoparticles: Synthesis, Spectroscopy, and Atomic Force Microscopy / Teacher notes

Resources

"Nanotechnology Takes Off" - A video from KQED QUEST

Penn State's Center for Nanotechnology Education and Utilization

Nomenclature/Formula Writing

Procedural Labs

Chemistry Poker

Nuclear Chemistry

We currently use SPECTECH ST-150 Nuclear Lab Stations. We also have Radiation Monitors from Vernier for use with a computer.

*Denotes advanced lab

Organic

Inquiry-Based Labs

*The Effects of the Size of Molecules on Retention Time / Teacher Notes

*Spiking Analysis of Dry Gas / Teacher Notes

Procedural Labs

GC Analysis of Mouthwashes / Teacher Notes

*The Effects of the Size of Molecules on Retention Time / Teacher Notes

Esterification / Teacher Notes

*Fractional Distillation / Teacher Notes

Microscale Synthesis of Acetylsalicylic Acid / Teacher Notes

Separation of Alcohols / Teacher Notes

Simple Distillation / Teacher Notes

*Spiking Analysis of Dry Gas / Teacher Notes

*Verification of Esterification / Teacher Notes

* Denotes advanced lab

Periodicity

Inquiry-Based Labs

HyperChem Lite Periodic Table Trends / Teacher Notes

iPad Apps

Periodic Table +

Procedural Labs

*Activity Series of Metals / Teacher Notes

HyperChem Lite Periodic Table Trends / Teacher Notes

*Denotes advanced lab

pH

We have 12 Thermo Orion 2 Star pH meters purchased in the Spring of 2008. These have digital interfaces with easy calibration. The calibration instructions pull out from the front of the meter. These labs can also be performed with a computer using Vernier pH probes.

Procedural Labs

*Acid Content of Fruit Juice / Teacher Notes

*Analysis of Drain Cleaners / Teacher Notes

*Analysis of Vinegar (and Standardization of NaOH) / Teacher Notes

*Determination of the K_a of a Weak Acid / Teacher Notes

pH of Households / Teacher Notes

*Preparing Buffers and Buffer Capacity / Teacher Notes

Titration Curve / Teacher Notes

*Titration Curves and Acid/Base Indicators / Teacher Notes

*Titration of Oxalic Acid / Teacher Notes

*Titration of Polyprotic Acids / Teacher Notes

Resources

Standardizing pH Meters

Introduction to pH

*Denotes advanced lab

Physical Properties

We utilize Mel Temp II made by Laboratory Devices for Determination of Melting Point. We have begun using them with digital thermometers, which works very well.

Procedural Labs

Accuracy and Precision in the Determination of the Density of Water / Teacher Notes

Bond Types and Physical Properties / Teacher Notes

Density of a Liquid / Teacher Notes

Determination of Boiling Points / Teacher Notes

*Estimation of Atomic Mass from Specific Heat / Teacher Notes

Freezing point of Salol / Teacher Notes

Melting Point Determination / Teacher Notes

Microdensity of Plastics / Teacher Notes

Resources

Introduction to Physical Properties

*Denotes advanced lab

Redox

Procedural Labs

*Oxidizing Power of Laundry Bleach / Teacher Notes

*Gold Nanoparticles: Synthesis, Spectroscopy, and Atomic Force Microscopy / Teacher notes

*Silver Nanoparticles: Synthesis, Spectroscopy, and Atomic Force Microscopy / Teacher notes

*Denotes advanced lab

Statistics

Procedural Labs

Accuracy and Precision in the Determination of the Density of Water / Teacher Notes

Moisture Content of Popcorn -- Statistical Analysis / Teacher Notes

The Statistics of Counting / Teacher Notes

Stoichiometry

Procedural Labs

*Percent Copper and Formula Weight of a Copper Compound / Teacher Notes

*Spectrophotometric Analysis of Aspirin / Teacher Notes

*Spectrophotometric Determination of the Thickness of Copper on a New Penny / Teacher Notes

*Stoichiometric Investigation Using Copper / Teacher Notes

*The Stoichiometery of a Reaction / Teacher Notes

*Denotes advanced lab

Thermodynamics

Procedural Labs

*Entropy of a Reaction

*Heats of Reaction and Hess's Law / Teacher Notes

*Denotes advanced lab

UV Spectroscopy

We own six Genesys 10 UV-VIS scanning spectrophotometers. They were purchased from Thermo in the summer of 2007.

Procedural Labs

*Analysis of Suntan Lotion / Teacher Notes

*UV Analysis of Caffeine in Soda / Teacher Notes

*Denotes advanced lab

Visible Spectroscopy

Most of our visible spectrophotomers are Spectronic 20's made by either Milton Roy or Thermo Scientifc. We purchased 12 new Spec 20's in summer 2007. These labs may also be done with our Genesys 10 UV-Vis scanning specs.