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Science chemistry education learning chemistry class classroom laboratory lab equipment demonstration chemicals supplies kits science experiments chemistry lab equipment demonstration kits flame test photons chemical flame test spectrophotometers chemicals school supplies flinn scientific experiments lab videos classroom education chemistry science demonstrations experiments activities high school science junior high middle school science chemistry classroom activitiy experiment. lab safety equipment safety protection goggles splash guard lab apron
Science chemistry education learning chemistry class classroom laboratory lab equipment demonstration chemicals supplies kits science experiments chemistry lab equipment demonstration kits flame test photons chemical flame test spectrophotometers chemicals school supplies flinn scientific experiments lab videos classroom education chemistry science demonstrations experiments activities high school science junior high middle school science chemistry classroom activitiy experiment. lab safety equipment safety protection goggles splash guard lab apron
Bangs, Flashes, and Explosions
An instantly-downloadable book that contains over 180 thrilling and dynamic chemistry demonstrations and activities.
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These demonstrations and more are all described in this must-have book for any chemistry teacher. Compiled over several years by a chemistry instructor who believes that part of teaching excellence in science is bringing concepts to life in classroom demonstrations that students can see, hear, feel, and remember.
In this demonstration, iron compounds are used to produce finely-divided iron. This is an excellent demonstration for illustrating the relationship between surface area and reaction rate. Iron normally oxidizes very slowly, due to the fact that not much surface area is exposed to oxygen. In this demonstration, when the very finely-divided iron particles are dropped through air, the large surface area exposed to air induces the exothermic oxidation reaction, causing the "sparkler" effect as it falls. Video and editing by Dr. Chris Schrempp
In this demonstration, yellow phosphorus is reacted with oxygen gas underwater. Due to its pyrophoric nature, it is dangerous to combust phosphorus in the open classroom. Here, the element is placed in a test tube filled with water which is then suspended in a flask containing warm water. The tube is sealed, and oxygen is bubbled in from a canister. Combustion products are routed into a separate flask containing water. The warm water bath melts the phosphorus and, as oxygen bubbles come in contact with it, the phosphorus bursts into a bright flash as it combusts. Video and editing by Dr. Chris Schrempp
The combination of red phosphorus and potassium chlorate produces a violent exothermic reaction which has been used for many years in matches, explosives, cap guns, etc. Potassium chlorate decomposes to yeild oxygen, which then participates in an exothermic redox reaction with the red phosphorus. In this demonstration, powdered potassium chlorate is placed on a small pile of powdered red phosphorus on a ring stand. A weight is suspended over the pile using a string. When the weight is dropped on the pile, a violent explosion occurs. Illustrates thermodynamic reactions, redox, reaction rates, and the general fascination of chemistry! Video and editing by Dr. Chris Schrempp
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