Organic Chemistry- Tubeless Siphon

Bromination of Saturated and Unsaturated Hydrocarbons

Blue Bottle

Dehydration of Sugar by Sulfuric Acid

Disappearing Coffee Cup

Formation of a Silver Mirror

Models 360

Nylon 6 – 10

Organic Synthesis With Familiar Materials

Oxidation of Primary, Secondary, Tertiary Alcohols

Oxidation of Luminol

Polyurethane Foam

Slime

Underwater Fireworks: Chlorination of Acetylene

Carbide Lamp

Differences in Miscibility of Organic Alcohols Increasing Chain Length

Combustion of Cellulose Nitrate (Guncotton)

Different Smells of Carvone Isomers

Distinguishing Between HD and LD Polyethylene

Enviro-bond: Cleaning Oil Spills

Esterification Using a Dean-Stark Trap

Ethanol Cannon

Happy/Sad Balls

IR Demonstrations I – Atomic Coupling

IR Demonstrations II – Molecular Vibrations

IR Demonstration III – Molecular Vibrations

Making a Rubber Ball from Latex

Plastic Samples

Reaction Intermediates in Organic Chemistry

Reducing Sugars and Fehling’s Solution

Rod Climbing by a Polymer Solution

Rotating Rainbows

Silly Putty

Soap Emulsifies Hydrocarbons

Superabsorbent Polyacrylate Gel

Tubeless Siphon

Alkimers

Aniline Hydrochloride-Formaldehyde Polymer

Phenol-Formaldehyde Polymer

Saponification

Relative Reactivity of Reducing Agents

Electrophilic Aromatic Substitution Reaction/EAS Reaction

Reactivity of Alkanes vs Aromatic Compounds

Inductive Effect

Optical Activity of Racemic Mixtures With Limonene

Relationship of Absorbed Light to Observed Color

Density and Miscibility of Liquids 

Extraction of Copper Ions from Solution with Orform®

Gel Formation with Sodium Alginate and Calcium Chloride

Ozonolysis

Hydrolysis of T-Butyl Chloride: A Lecture and Lab Experiment 

 Tubeless Siphon

Description: An aqueous polyethylene oxide solution, once started, will siphon over the edge of a beaker.

Source: Shakhashiri,  B.Z. Chemical Demonstrations: A Handbook for Teachers of Chemistry

Year: 1989   Vol: 3   Page: 333

Keywords: Tubeless Siphon, Non-Newtonian, Polyethylene Oxide, Polymers

Rating:

Hazard: Medium

  • Acute toxicity hazard
  • Skin corrosion hazard
  • Serious eye damage
  • Aquatic toxicity hazard

Effectiveness: Average

  • Somewhat connected conceptually to course material
  • Mild effects are seen by audience
  • Moderate failure rate
  • Counter-intuitive effects

Difficulty: Medium

  • Some careful manipulations required
  • Some intermediate steps to final result
  • Prior training recommended

Safety Precautions:

  • Eye protection and gloves required
  • Prevent release of reagents to the environment
  • Avoid exposure to dusts and vapors

Class: Organic Chemistry, Macromolecules and Solid State

Division: General, Organic Chemistry, Physical Chemistry