In this video we make a working platinum electrode using easy to get materials. Signup for your FREE trial to The Great Courses Plus here: http://ow.ly/qLR730acnj2
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FAKE Platinum electrode: https://www.youtube.com/watch?v=uDQuP4oCOgo
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In this video we purify sulfuric acid by distillation using a heating mantle we built in a previous video.
The reason why we need a special heating mantle is because most don't get hot enough to boil sulfuric acid.
Click here for our original video on how to make a high temperature heating mantle:
http://www.youtube.com/watch?v=N5meDWAqYes
The heating mantle in the video is connected to a variac autotransformer off-camera. But a light dimmer switch can provide the same power control for a fraction of the cost. Alternatively, a PID controller may be used.
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https://www.youtube.com/watch?v=tgUH0HXrOKE
In this video we fail at making thermite from the gallium infused aluminum.
The objective was to see if the weak gallium infused aluminum could be used to make aluminum powder without going through the arduous filing step necessary for bulk aluminum. Turns out the gallium infused aluminum does crumble easily, especially with raised temperature, but doesn't become fine enough for thermite. Only filing bulk aluminum made it fine enough for thermite. Alternatively, just buying aluminum is usually the better option.
Another thing we tried was making gallium iron oxide thermite. Gallium has similar properties to aluminum so this wasn't a crazy idea. Turns out though gallium produces far too little energy to initiate a self-sustaining thermite reaction so that was a fail as well.
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The standard domestic carbon monoxide detector you can buy at most hardware and home supply stores has a lesser known feature: It can detect hydrogen.
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We get Zinc, Carbon Electrodes and Manganese dioxide from a lantern battery.
We'll be using all of these components in upcoming videos.
Zinc is a good metal for battery experiments:
http://www.youtube.com/watch?v=Id3tL2iI0Vw
Carbon electrodes are good for electrolysis.
Manganese dioxide will be used to make potassium permanganate.
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https://www.youtube.com/watch?v=knc1lSupAwQ
In this video i repair the broken stirrer in my hotplate stirrer. Turns out the encoder disk snapped so to "fix" it i just glued it back in place.
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In this video i thank you for your support and answer your science questions.
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We take cubes of regular ice and cool them with liquid nitrogen.
The ice made this way can be used to cool drinks and as long as you don't let the ice directly touch your mouth the drinks are safe. Once they warm back up to 0 degrees they can be treated exactly the same as regular ice.
Alternatively, just use a straw when using ice of this type.
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https://www.youtube.com/watch?v=tXrRaeIhAds
We make strontium nitrate from strontium carbonate and nitric acid.
Strontium Nitrate is used as an oxidizer in some types of pyrotechnic compositions to give a brilliant red color. A well-known example is flares.
Actually making it is very simple. Just mix 45 grams of strontium carbonate, 100mL of water and 40mL of concentrated (15.6M) nitric acid and then boil down until it's dry.
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https://www.youtube.com/watch?v=_rd8b6wNnKA