Potassium is an "evil" element, but it's crucial to life. In this video see some violent explosions and the gentle creation of a potassium mirror. More chemistry at www.periodicvideos.com Follow us on Facebook at www.facebook.com And on Twitter at twitter.com Periodic Videos films are by video journalist Brady Haran. + Informações

A chemical demonstration of the reaction between sodium and water and between potassium and water. Carleton University, Ottawa, Canada.. + Informações

There's a reason why I started with 250 mg (1/4gram) of potassium. When dealing with potentially hazardous stuff, you need to have a good feel of what the hazards are. The scale-up went 1/4 g, ~1.5g, then 8 grams. The 8 grams did not destroy the shatter resistant jug, but it sure made a mess of the plastic container on which it stood. What you see in this video is a concerto of chemistry and physics. However I'm currently on the road, and really don't have much time or resources to make a detailed video about it at the moment. Will hopefully get something out later though :-) This video was made with material purchased with donations to the thunderf00t channel and is available under a creative commons, share-alike, attribution license (attribution Thunderf00t). The music (available under the same license) is Windpearl, Mother Earth, track 4.5 billion years. Who'd a thunk it!. + Informações

Learn more about potassium and how to assess for abnormal values in your patient. From: www.ed4nurses.com. + Informações

We make potassium metal using a lesser known chemical approach of reduction with magnesium. Warning: Making potassium is extremely dangerous. Full fire safety protocols must be in place including protective clothing, goggles and face shields. Burning potassium cannot be extinguished by conventional means and water only serves to increase its danger. This experiment should only be performed by an experienced chemist in a fume hood. In a flask place 2.4g of magnesium turnings or powder, 5g of potassium hydroxide, and 20 mL of tetahydronapthalene or paraffin/mineral oil. If using oil the boiling point should be greater than 200 degrees Celsius. Fit a reflux condenser onto the flask and prevent air access by covering the top of the condenser with foil. Alternatively a bubbler or a punctured balloon may be used. Heat the reaction to reflux or +200 degrees Celsius. Color change of the solvent may occur at this time. Inject of 0.4 mL of a tertiary alcohol (t-butanol and t-amyl alcohol have been confirmed successful) through the top of the condenser. Add in an additional 0.1mL of alcohol every 10 minutes for a total of 0.6 mL of additional alcohol (1.0 mL overall). Continue to reflux until potassium is produced. If potassium goes dark, add an additional 0.1 mL of alcohol. What's happening is the magnesium reacts with the potassium hydroxide to produce potassium metal, hydrogen gas and magnesium oxide. The alcohol catalyzes this reaction. If you're using a high-density solvent .... + Informações

High blood pressure may be helped by a diet high in potassium. Learn more about the effects of potassium on blood pressure with tips from a doctor in this free health video. Expert: Dr. Robin Terranella Bio: Dr. Robin Terranella has a medical degree from Bastyr University and has trained at Wu Hsing Tao Acupuncture School. Filmmaker: Dustin Daniels. + Informações

Molten potassium chlorate is a strong oxidizing agent that reacts violently with sugar. Gummy bears have lots of sugar in them.. + Informações

www.ihealthtube.com Pharmacist Max Motyka explains why you need potassium - especially for athletes and people who exercise and sweat.. + Informações

How a sodium potassium pump can maintain a voltage gradient across a cell or neuron's membrane. + Informações

What Is Potassium Name Origin From potash (pot ash); K from latin: kalium "Potassium" in different languages. Sources Found in minerals like carnallite [(KMgCl3).6H2O] and sylvite (KCl). Potassium makes up about 2.40% of the weight of the Earth's crust, it is the seventh most abundant element. The main sources of potash are mined in USA (California, New Mexico and Utah) and Germany. Around 200 tons are produced annually. Abundance Universe: 3 ppm (by weight) Sun: 4 ppm (by weight) Carbonaceous meteorite: 710 ppm Earth's Crust: 15000 ppm Human: 2 x 106 ppb by weight 3.2 x 105 ppb by atoms Uses Used as potash (potassium carbonate) in making glass, soap, lenses and salt substitute. Also as potassium nitrate (KNO3, also called saltpeter) it is used to make explosives and to colour fireworks in mauve. Glass treated with liquid potassium is much stronger than regular glass. Potassium chloride (KCl) is used as a substitute for table salt and is also used to stop the heart, eg in cardiac surgery and in executions by lethal injection in solution. History Potassium was discovered in 1807 by Sir Humphry Davy, who derived it from caustic potash (KOH). Potassium was the first metal that was isolated by electrolysis.. + Informações

I did not make this video. I found it online on a website called McGraw Hill.. + Informações

A reaction of small piece of potassium metal with water. The flame you see is actually burning hydrogen given off but is colored pink due to potassium vapor.. + Informações

Treat low potassium in blood levels by eating avocados, bananas, tomatoes and dried apricots. Find out what else to eat to treat low potassium blood levels with tips from an licensed dietitian in this free video on eating healthy. Expert: Christine Marquette Bio: Christine E. Marquette is a registered and licensed dietitian with the Austin Regional Clinic in Austin, Texas. Filmmaker: Todd Green. + Informações

We show how to coalesce small spheres of potassium into large ones. Warning: Molten potassium is extremely dangerous. Full fire safety protocols must be in place including protective clothing, goggles and face shields. Burning potassium cannot be extinguished by conventional means and water only serves to increase its danger. This experiment should only be performed by an experienced chemist in a fume hood. Place a vial of toluene washed potassium in mineral oil in the center of a stir plate. Add a few drops of tertiary amyl alcohol or tertiary butanol. Lightly cap the vial to suppress liquid sputtering but still allow hydrogen escape. Turn on stirring and heat the potassium until molten. Potassium is paramagnetic and conductive so the rotating magnetic field of the stir plate and the resulting eddy currents causes the potassium to rotate as well. The alcohol helps to clean and reduce the surface tension of the potassium, while the stirring brings them together and causes them to coalesce. Additional alcohol may need to be added if the potassium reoxidizes. Eventually with time, the potassium will coalesce into large spheres. If it stirs too fast the potassium might deform and fly apart again into small spheres. Slow down the stirring in that case but remember that it still needs to stir fast enough to break the surface tension between the spheres and merge together. Once you have the size you like stop the stirring and let it cool.. + Informações

This short video shows the molecular dynamics of a voltage-gated potassium channel (kv1.2) embedded in a lipid bilayer. The Kv1.2 structure is shown as pink cartoon; the lipid bilayer is represented as cyan sticks (lipid phase) and the phosphate moieties are in orange. The green sphere represents K+ ions bound to the selectivity filter. Only a tiny fraction of the total number of water molecules are represented here.. + Informações

This video describes the structure of the potassium channel. This video is from: Essential Cell Biology, 3rd Edition Alberts, Bray, Hopkin, Johnson, Lewis, Raff, Roberts, & Walter ISBN: 978-0-8153-4129-1. + Informações

When a solution of lead nitrate is poored into a solution of Potassium iodide a yellow precipitate of lead iodide is formed.. + Informações

If you love bananas, you're on the right track to a healthier self!. + Informações

A very violent reaction of sodium and then potassium with water. 2Na + 2H2O forms 2NaOH + H2 2K + 2H2O forms 2KOH + H2. + Informações

A behind the scenes look at our Big Gummy Bear versus a small bowl of molten potassium chloride. Lots of fire, smoke, damage, and broken glass! ** WARNING: DO NOT TRY THIS AT HOME. EVER! ** Check out the delicious bears here: www.vat19.com You can also check out the original video here: www.vat19.com. + Informações

This video shows what happens when you mix potassium permanganate with brake fluid. It's pretty cool, and a little more violent than the classic KMnO4 + Glycerin trick. I sell Potassium Permanganate in my store! styropyro.com. + Informações

The explosive results of dropping a Gummy Bear in molten potassium chlorate Clip from EBaumsworld.com (www.ebaumsworld.com. + Informações

when glycerine is added to Potassium permanganate it causes an exothermic reaction devslab.blogspot.com. + Informações

We make potassium permanganate from the potassium nitrate and manganese dioxide we obtained in previous videos. Warning: This experiment deals with very high temperatures in glass equipment. Face shields and protection against shattering glass is required. In addition small quantities of toxic gases are produced. This experiment should be performed outside or in a fume hood. Make a vial with a mixture of 7 grams of potassium nitrate and 1 gram of manganese dioxide. Using a torch carefully heat the mixture so they melt together. Smoke and fumes should be liberated as the potassium nitrate oxidizes any contaminants in the manganese dioxide. Keep the mixture molten for a few minutes. Now add 2 grams of potassium hydroxide and heat the mixture again thoroughly. It will boil and turn green as the reactants generate potassium manganate. Keep it on a gentle boil for several minutes. Let the vial cool and then smash it apart with a hammer. Obtain the green solid and pulverize it into a powder. Mix this powder with 50 mL of water and dissolve the green potassium manganate. Let it settle and then pour off the solution. The solution can be converted to potassium permanganate by adding drops of either sulfuric acid or sodium bicarbonate. Just keep adding and stirring until the solution turns purple. If you go too far it will turn light pink indicating the permanganate has been destroyed. Let the byproduct of brown manganese dioxide settle out and the liquid is a weak solution of .... + Informações

POTASSIUM OVERDOSE FROM EATING 400 BANANAS IN 30 SECONDS? Durianrider on Facebook www.facebook.com To Donate to Durianrider: www.paypal.com Durianriders 2$ audio mp3 and blog links below. ?www.30bananasaday.com Blog ?www.durianrider.org? Raw food diet vegan high carb low fat style based on fruit keeps you slim naturally. How to get a flat stomach, how to lose weight fast, how to lose weight with raw foods.how to start a raw food diet? all these questions and more answered by Durianrider & Freelee on our channels.. + Informações