Title.
11:20:21 Scientist / chemist lays out diamond ring, pencil & lump of coal - all from carbon element. CU chemist handles diamond ring.
11:21:02 Worker in factory using grinding machine w/ diamond grit for its hardness. CU handling lead pencil - graphite rod & filings. Charcoal - amorphous carbon & very soft - soot used as pigment mixed into paint. 11:22:45 Coal shoveled into furnace. Chemist in studio laboratory w/ carbon dioxide CO2 cannister - holds match over valve to show it is inflammable. Water mixed w/ carbon dioxide makes carbonic acid H2CO3.
11:23:42 Cylinder of H2CO3 behind counter of soda fountain, pan up to girl serving Coca-Cola to teenagers lined up on stools - CU sparkling glass of Coke w/ superimposed formula. Chemist in lab demonstrates flammability of carbon di-sulphide & carbon tetrachloride - one used to extinguish the other.
11:24:47 CU large old fashioned vial marked ‘Petroleum’ - many superimposed formulas for organic compounds carbon + hydrogen. Chemist builds models using plastic carbon & hydrogen atoms to make chain compounds - methane, ethane, propane, butane. More complex ring compounds built - benzene, acetylene, iso-butane. Oxygen atom added to make methanol / wood alcohol.
11:29:21 Common organic compounds - bag of sugar, box of starch. CU chemist lays out coal, petroleum, wood fibre, water - basis for new materials: car being filled w/ high-test gasoline - synthetic rubber tires - rayon fabric - nylon gloves - baby w/ plastic toy - cabinet of synthetic drugs at pharmacy.
Science - Chemistry: 1940s; 1949; Industry; Mass Production - Post-WWII; Post-WW2; Consumer Goods; Educational Films;
NOTE: Good quality color.
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Title. 11:20:21 Scientist / chemist lays out diamond ring, pencil & lump of coal - all from carbon element. CU chemist handles diamond ring. 11:21:02 Worker in factory using grinding machine w/ diamond grit for its hardness. CU handling lead pencil - graphite rod & filings. Charcoal - amorphous carbon & very soft - soot used as pigment mixed into paint. 11:22:45 Coal shoveled into furnace. Chemist in studio laboratory w/ carbon dioxide CO2 cannister - holds match over valve to show it is inflammable. Water mixed w/ carbon dioxide makes carbonic acid H2CO3. 11:23:42 Cylinder of H2CO3 behind counter of soda fountain, pan up to girl serving Coca-Cola to teenagers lined up on stools - CU sparkling glass of Coke w/ superimposed formula. Chemist in lab demonstrates flammability of carbon di-sulphide & carbon tetrachloride - one used to extinguish the other. 11:24:47 CU large old fashioned vial marked ‘Petroleum’ - many superimposed formulas for organic compounds carbon + hydrogen. Chemist builds models using plastic carbon & hydrogen atoms to make chain compounds - methane, ethane, propane, butane. More complex ring compounds built - benzene, acetylene, iso-butane. Oxygen atom added to make methanol / wood alcohol. 11:29:21 Common organic compounds - bag of sugar, box of starch. CU chemist lays out coal, petroleum, wood fibre, water - basis for new materials: car being filled w/ high-test gasoline - synthetic rubber tires - rayon fabric - nylon gloves - baby w/ plastic toy - cabinet of synthetic drugs at pharmacy. Science - Chemistry: 1940s; 1949; Industry; Mass Production - Post-WWII; Post-WW2; Consumer Goods; Educational Films; NOTE: Good quality color.