If you want to download this video then go to this site: http://downloadvideo s.co.nr .A drop of mercury in a watch glass is covered with a solution of potassium chromate in concentrated sulfuric acid. An iron nail is positioned so that it nearly touches the mercury. Eventually, the mercury drop starts to beat rhythmically, like a beating heart. A close up view is shown.
If you want to download this video then go to this site: http://www.downloadv ideos.co.nr .Magnesium is placed in a cavity in a block of dry ice. The magnesium is ignited and covered by another block of dry ice. The magnesium continues to glow, due to its reaction with carbon dioxide. This demonstration is difficult to set up
This is subtitled.If you want to download this video then go to: http://downloadvideo s.co.nr .A small piece of sodium metal is placed in a flask containing chlorine gas. The reaction is initiated by adding a drop of water. A close up view of this extremely dangerous reaction is shown
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A ring stand is set up with two rings, each holding a filter paper spread with nitrogen triiodide. The bottom filter paper is touched with a feather, causing an explosion that detonates the other sample of nitrogen triiodide. Close up views and slow motion of this very dangerous reaction are shown.
to download this video please go to: http://downloadvideo s.co.nr .Sodium hydroxide solution is added to cobalt(II) chloride solution. A close up view of the reaction is shown. There is no narration.
To download this video please go to http://downloadvideo s.co.nr .The nitrous acid test is used to classify amines as primary (-NH2), secondary (-NHR), or tertiary (-NR2).
To download this video please go to this url: http://www.downloadv ideos.co.nr . A small piece of sodium is dropped into both dilute and concentrated solutions of hydrochloric acid and nitric acid. There is no sound or narration. A close up view is shown. This is an extremely hazardous demonstration.
To download this video please go to http://www.downloadv ideos.co.nr .Copper sulfate is mixed with a solution of potassium hydroxide and potassium sodium tartrate to form Fehling's reagent. The solution is heated and then sucrose is added to one container and glucose to the other.
If you want to download this video then go to this site: http://www.downloadv ideos.co.nr . A cast iron bomb filled with water is placed in a dry-ice/acetone slush and covered with a wooden box. When the water in the bomb freezes, the bomb explodes. This demonstration is dangerous and the required equipment can be difficult to obtain.
If you want to download this video then go to this site: http://downloadvideo s.co.nr .Benzene in a sealed tube has been heated to a point above the critical temperature. As it cools below the critical temperature, the meniscus appears. This process is shown close up. It can be very difficult to see with the naked eye.
to download this video please go to http://www.downloadv ideos.co.nr . Sodium hydroxide solution is added to silver nitrate solution. A close up view of the reaction is shown. There is no narration.
If you want to download this video then go to this site: http://downloadvideo s.co.nr .A magnet placed just below a dish containing ferrofluid generates an array of spikes in the fluid. A close up view is shown.
To download this video please go to : http://www.downloadv ideos.co.nr .A spatula is used to transfer solid to be weighed using an analytical balance. A close-up view shows that you can control the amount of solid transferred to the nearest granule of solid.
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Correct technique for reading the meniscus of a buret is demonstrated. Common errors are also illustrated.
If you want to download this video then go to this site: http://www.downloadv ideos.co.nr . Sodium iodide solution is added to mercury(II) chloride solution. Both the reactants and products are toxic. A close up view of the formation of the product is shown.
TO download this video please go to: http://downloadvideo s.co.nr .White light is passed through a cylinder filled with sucrose solution and the variation of color with distance is shown.
If you want to download this video then go to: http://downloadvideo s.co.nr .A small piece of sodium metal is placed in a flask containing chlorine gas. The reaction is initiated by adding a drop of water. A close up view of this extremely dangerous reaction is shown.
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A thermometer is positioned in a solution so that it does not come in contact with a magnetic stirring bar used to mix the solution.
![Fehling\](http://img.youtube.com/vi/G8PYiUCkFhE/2.jpg "Fehling\")
