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Electrolysis & Corrosion

11 minutes, 57 seconds

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Measurement device with leads attached. A rectangular box filled with fluid and a person putting a lid on the box with two leads reaching into the liquid. Caption: An important part of the electrolysis cell

Experiments demonstrate the electrolysis of copper sulfate and the factors leading to corrosion. Other demonstrations focus on the chemical reactions of iron nails in water, sulfuric acid, sodium hydroxide, sodium chloride, and air.

Media Details

Runtime: 11 minutes, 57 seconds

Topic: Science
Subtopic: Chemistry, Science Experiments
Grade/Interest Level: 9 - 12
Standards:

Release Year: 2001
Producer/Distributor: Landmark Media
Series: School Chemistry Experiments
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Beakers labelled 1M KOH, ind. and 1M HCI. Another beaker with a greenish liquid has a tube with a nozzle at the mouth of it. Caption: The neutral solutions will be changed

Glass container labelled as CaC2 with a gray, rocky substance sitting among other scientific instruments. Caption: has the chemical name "calcium carbide."

Silvery metallic orb with iridescent spiky crystals adhering to the bottom. Caption: Iodine crystals are not only interesting

Container labelled CaO with a white powdery substance next to a dish with a granular light brown substance. A person is about to scoop out some CaO. Caption: and also sulfur and oxygen.

Open flame with a piece of metal in it. Flame below the metal is blue, above the metal is orange. Ca2+. Caption: Calcium compounds show a typical orange-red coloring.

Measurement device with leads attached. A rectangular box filled with fluid and a person putting a lid on the box with two leads reaching into the liquid. Caption: An important part of the electrolysis cell

Clear pebble substance in a test tube melting as it is being heated by a flame. Caption: This is called "depolymerization."

Person holding an open beaker of a clear liquid next to an empty test tube. Caption: Acetic acid is weaker than most inorganic acids.

Narrow curving tube exits into a wider tube. Both are underwater. Caption: whether hydrogen has a higher or lower density than air.

Beaker of liquid with a yellow substance dissolving. Caption: It was formed by the oxidation of potassium iodide.