If you want to download this video then go to: http://www.downloadvideos.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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Pulsating Electrochemical Reaction: Mercury Beating Heart
If you want to download this video then go to this site: http://www.downloadvideos.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.
To download this video please go to this url: http://www.downloadvideos.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.
A simple way to make your friend impress...... Dry ice was first observed in 1825 by the French chemist Charles Thilorier.[3][4] Upon opening the lid of a large cylinder containing liquid carbon dioxide he noted much of the carbon dioxide rapidly evaporated leaving solid dry ice in the container. Throughout the next 60 years, dry ice was observed and tested by many scientists.Dry ice is typically produced in two standard sizes: solid blocks and cylindrical pellets. A standard block is most common and will normally be about 30 kg. These are largely used in the shipping industry because they sublime slowly due to a relatively small surface area. The pellets are around 1 cm in diameter and can be bagged easily. This form of dry ice is more suited to small scale use, for example at grocery stores and laboratories.
If you want to download this video then go to this site: http://www.downloadvideos.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.
make a smoke bomb
Will teach you how to make a big smoke bomb
How to make a dry ice bomb
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