Sub-category	Demo Name	Brief Description	Demo Notes	Demo #	Type of Item
Limiting Reactant	Limiting reactant concept (PbCrO4)	Potassium chromate and lead nitrate give a thick yellow precipitate.  One reactant is diluted  to show the ppt decreases.	Also illustrated by Dr. Laude using 6 bolts, 4 nuts, 12 washers on an overhead projector  (See demo #152)	2	Demonstration
Limiting Reactant	Explosive reaction of hydrogen and oxygen (balloons)	Hydrogen alone gives a swoosh and boom, hydrogen:oxygen 2:1 is very loud with percussion (you feel the explosion)	Also video on Shakashiri tape 2 #20 and #21	8	Demonstration
Limiting Reactant	limiting reaction hardware	With uneven numbers of nuts and bolts-which is limiting?		152	Demonstration
Limiting Reactant	Combustion of a cigarette	Dr. Jones only.  He holds oxygen hose pinched closed and away after taking in some to his lungs.  He breathes out to a lighted cigarette, which flares instead of slow burning.		105.x	Demonstration
Limiting Reactant	Explosive reaction of hydrogen and oxygen	Hydrogen alone gives a swoosh and boom, hydrogen:oxygen 2:1 is very loud with percussion (you feel the explosion)	Shakashiri tape 2 #20 and #21	M2	Movie
Sequential Reactions	Starch-iodine clock reaction	variations-temperature and concentration; variations of clocks containing starch only	Popular-can time or have a race, can explain the variations by reaction rate.  Also on Shakhashiri tape III #44 and #45	40	Demonstration
Sequential Reactions	Briggs Rauscher reaction: oscillating starch-iodine clock	A more complicated reaction than #40.  Clear, orange, blue; yellow-blue variations; other oscillations containing starch only.	High entertainment value, and surprising to see the reaction happen over and over.  Also on Shakhashiri tape III #46	41	Demonstration
Sequential Reactions	clock and oscillating reactions that rely on chemicals only (no dextrose or starch), orange tornado.		Also see # 39,40,41,82 for color experiments.  Also on Shakhashiri tape I #14; Close up on Chemistry Ealy 34:31 (3 min); Close up on Chemistry Ealy 42:52 (3:24 min)  (Ealy set timer to zero when first line of text scrolls onto screen)	124	Demonstration
Sequential Reactions	Starch-iodine clock reaction	variations-temperature and concentration; variations of clocks containing starch only	Shakhashiri tape III #44 and #45	M15	Movie
Sequential Reactions	Briggs Rauscher reaction: oscillating starch-iodine clock	A more complicated reaction than regular iodine-clock.  Clear, orange, blue; yellow-blue variations; other oscillations containing starch only.	Shakhashiri tape III #46	M16	Movie
Sequential Reactions	clock and oscillating reactions that rely on chemicals only (no dextrose or starch), orange tornado.		Shakhashiri tape I #14; Close up on Chemistry Ealy 34:31 (3 min); Close up on Chemistry Ealy 42:52 (3:24 min)  (Ealy set timer to zero when first line of text scrolls onto screen)	M41	Movie
Stoichiometry	Explosive reaction of hydrogen and oxygen (balloons)	Hydrogen alone gives a swoosh and boom, hydrogen:oxygen 2:1 is very loud with percussion (you feel the explosion)	Also video on Shakashiri tape 2 #20 and #21	8	Demonstration
Stoichiometry	Reaction of sugar/potassium chlorate.	This is better done outside.  It can be used to spell out letters in fire on pavement at a school circus.	Sulfuric acid starts the reaction.  Also see gummy bears #24.  Also on Close up on Chemistry Ealy 22:10 (2:11 min)	22	Demonstration
Stoichiometry	Torching gummy bears	The potassium chlorate is melted in a tube, and the gummy bear dances and growls as it is consumed by its combustion, sparks shoot inside the tube and it is bright in the room.  Do outside if the room is small.	A very popular demo for sacrificing for football or test success.	24	Demonstration
Stoichiometry	Endothermic reaction of barium hydroxide and ammonium chloride,	The two solids are mixed in a covered flask and produce a smelly liquid that is cool to the touch when passed around, and that can make the flask stick to a wet board.	also for speed of smell.  Also on Close up on Chemistry Ealy 19:54 (2:16 min)	34	Demonstration
Stoichiometry	Guncotton vs. cotton, and light sticks -flash of light, glowing light	Take a shred of the guncotton and put it on a watch glass.  Use a long matchstick to light it, and it produces a bright flash of yellow light.	The light sticks can be at different temperatures before reaction.  Also on Close up on Chemistry Ealy 18:04 (1:50 min)  (Set timer to zero when first text rolls on screen.)	88	Demonstration
Stoichiometry	Combustion of trinitrocellulose	Gun cotton - 4 days preparation.  Not available - may be able to do in a hood, outside, or tape demo for use in class.	don't make, but buy instead-see demo #88	18.x	Demonstration
Stoichiometry	Endothermic reaction of barium hydroxide and ammonium chloride,	The two solids are mixed in a covered flask and produce a smelly liquid that is cool to the touch when passed around, and that can make the flask stick to a wet board.	Close up on Chemistry Ealy 19:54 (2:16 min)  (Set timer to zero when first text rolls on screen.)	M12	Movie
Stoichiometry	Explosive reaction of hydrogen and oxygen	Hydrogen alone gives a swoosh and boom, hydrogen:oxygen 2:1 is very loud with percussion (you feel the explosion)	Shakashiri tape 2 #20 and #21	M2	Movie
Stoichiometry	Guncotton vs. cotton, and light sticks -flash of light, glowing light	Take a shred of the guncotton and put it on a watch glass.  Use a long matchstick to light it, and it produces a bright flash of yellow light.	Close up on Chemistry Ealy 18:04 (1:50 min)  (Set timer to zero when first text rolls on screen.)	M31	Movie
Stoichiometry	Reaction of sugar/potassium chlorate.	Sulfuric acid starts the reaction.	Close up on Chemistry Ealy 22:10 (2:11 min) (Set timer to zero when first text rolls on screen.)	M5	Movie