Category	Demo Name	Brief Description	Demo Notes	Demo #	Type of Item
Equilibrium Constants at Different Temperatures	Effect of temperature change on equilibrium of cobalt complexes	By heating or cooling the solution, you can get either pink, blue or purple.	Also on Close up on Chemistry Ealy 49:12 (6:16 min)  (Set timer to zero when first text rolls on screen.)	49	Demonstration
Equilibrium Constants at Different Temperatures	Magic handkerchief-cobalt (II) chloride reaction with moist air	Use a soaked handkerchief heated by a hair dryer to illustrate effect of T change on equilibrium (blue, pink-white)	See also #49.	51	Demonstration
Equilibrium Constants at Different Temperatures	Effect of temperature change on equilibrium of cobalt complexes	By heating or cooling the solution, you can get either pink, blue or purple.	Close up on Chemistry Ealy 49:12 (6:16 min)  (Set timer to zero when first text rolls on screen.)	M21	Movie
Le Chatelier’s Principle	Equilibrium and LeChatelier's Principle	Fe(NO3)3 and KSCN or K2CrO4 with HCl and KOH.  The chemicals are added to a petri dish on an overhead projector to observe darkening or disappearing of the orange color--	Color change may not be too dramatic; also a copper one, but it is pesky.	48	Demonstration
Le Chatelier’s Principle	Effect of temperature change on equilibrium of cobalt complexes	By heating or cooling the solution, you can get either pink, blue or purple.	Also on Close up on Chemistry Ealy 49:12 (6:16 min)  (Set timer to zero when first text rolls on screen.)	49	Demonstration
Le Chatelier’s Principle	Effect of concentration on equilibrium of cobalt complexes	adding neutral water to the solution causes a color change - pink, blue	See also #51.  Also on Close up on Chemistry Ealy 49:12 (6:16 min) (Set timer to zero when first text rolls on screen.)	50	Demonstration
Le Chatelier’s Principle	Magic handkerchief-cobalt (II) chloride reaction with moist air	Use a soaked handkerchief heated by a hair dryer to illustrate effect of T change on equilibrium (blue, pink-white)	See also #49.	51	Demonstration
Le Chatelier’s Principle	Effect of temperature change on equilibrium of cobalt complexes	By heating or cooling the solution, you can get either pink, blue or purple.	Close up on Chemistry Ealy 49:12 (6:16 min)  (Set timer to zero when first text rolls on screen.)	M20	Movie
Le Chatelier’s Principle	Effect of concentration on equilibrium of cobalt complexes	adding neutral water to the solution causes a color change - pink, blue	Close up on Chemistry Ealy 49:12 (6:16 min)  (Set timer to zero when first text rolls on screen.)	M22	Movie
	Equilibrium by competing colored water volume of 2 beakers	Use a beaker to bail water from one big beaker to the other, then a smaller beaker to put the water back until the volumes in the 2 beakers are equal, plotting the volumes with each bail of water.		92	Demonstration
	Equilibrium by the loss of power to battery powered flashlights-when light is out, at equilibrium	Hand out flashlights at the beginning of class and notice they go dead.		94	Demonstration