Chemical Fun and Magic Show - Part III
- Does steel wool burn?
The effect of available surface and concentration of oxygen on combustion is demonstrated and discussed.
- Dust explosions
The effect of particle size on combustion is illustrated.
- Old time photographer's flash powder.
- Alcohol explosions/the chemistry of engines
Vaporized alcohol is combined with oxygen using an electric spark to ignite the mixture. The internal combustion engine is discussed along with student's dilemma when an experiment doesn't work.
- A light initiated explosion
The reaction of hydrogen with chlorine initiated by the light from a burning strip of magnesium pops the cork out of a test tube. This segment also illustrates that things don't always work right the first time.
- Light tubes - A controlled explosion
An explosion of nitric oxide with carbon disulfide vapor in an open-ended tube produces a slow moving blue flash down the tube.
- Metals and chlorine - Table salt
First antimony powder is sprinkled into a cylinder of chlorine gas to produce some chemical fireflies. Chlorination as a form of the generalized concept of oxidation is discussed. Then sodium is combined with chlorine to produce salt.
- The purple cloud
The exothermic reaction of zinc powder with excess iodine vapor.
- Exploding flasks/heterogeneous catalysis
The oxidation of hot alcohol on a platinum wire produces enough heat to explode an alcohol vapor oxygen mixture and the cycle repeats.
- Balloon and needle trick/atomic structure
A latex balloon and needle is used to discuss atomic structure.
- Polymers and plastics/nylon and foam
Plastic foam and a nylon rope is produced.
- Chemical patriotism
Red, white, and blue solutions are produced by pouring a colorless solution into a series of beakers to the tune of "you're a grand old flag". [So American!]
- Pyrotechnics/the chemistry of fireworks
Blue color, yellow sparks, and red flames are produced using sugar and potassium chlorate to which has been added a copper salt, iron powder, and a strontium salt respectively.
[Part I] | [Part II]
|Format:||VHS Videotape NTSC|
|Source:||John J Fortman|
|Address:||Dept. of Chemistry, Wright State University, Dayton, OH 45435, USA|