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\nIncandescent Light Bulb\n

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\nWe look at how an incandescent light bulb can be made. First we attach a tungsten wire to electrodes in a flask of air and pass a current through the wire. The wire glows briefly before burning and breaking. Next we fill the flask with...\nWe look at how an incandescent light bulb can be made. First we attach a tungsten wire to electrodes in a flask of air and pass a current through the wire. The wire glows briefly before burning and breaking. Next we fill the flask with the non-reactive, noble gas argon. This time the wire glows for a much longer time as the wire is heated without burning. Chemistry - Periodic Table - Learning Points. Metals conduct electricity when they are in a solid state; when they conduct electricity, solid metals heat up and glow due to electrical resistance. The oxygen in air is reactive and leads to combustion The noble gases are very unreactive. A Twig Experiment Film. Let students experience real experiments in lab conditions anywhere, from setup, method all the way through to analysis and real-world application.\n
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Resource Details

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Curator Rating
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Educator Rating
Not yet Rated
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Media Length
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7:20
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Grade
6th - 12th
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Subjects
Science
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Media Type
Instructional Videos
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Source:
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\nImagine Learning - Twig (middle years+)\n\n
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Date
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2012
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Language
English
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Audiences
For Teacher Use
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Usage Permissions
Fine Print: Educational Use
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Concepts

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heat, light, noble gases, gases, oxygen, elements, helium
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Additional Tags

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electrodes, electric, current, tungsten, w, argon, noble gas, ar, unreactive, normal conditions, electric current, white hot, power supply, carbon electrodes, conical flask, tungsten wire, supply, wire, reacts, piece, breaks, flask, breaking, react, table, means, connect, happen, pass
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Classroom Considerations

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Best For: Explaining a topic
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\n\" data-title=\"Get Full Access\" data-container=\"body\" rel=\"popover\" tabindex=\"0\" aria-label=\"Play video: Incandescent Light Bulb\" href=\"/subscription/new\">\"Incandescent\n\n
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