They have separated the components of water (hydrolysis) and analyzed them.
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Not actually a dangerous reaction as, unless you use dangerous amounts of electricity, you won't get much hydrogen.
In order to electrolyse pure water, you need a lot of electricity, but if you want to do it at home, you can use saltwater.
Take some salt water, hook two wires to a 9 volt battery, and put the ends of the wire in the water Bubbles will come off of the - wire, while a yellow stain will come off of the + wire. The bubbles are hydrogen, the yellow is chlorine. Sodium Hydroxide is also produced, but is not visible. If you collect the bubbles in a little tube and ignite the gas, there will be a small pop. It is difficult to produce enough hydrogen to be dangerous with this setup.
In order to electrolyse pure water, you need a lot of electricity, but if you want to do it at home, you can use saltwater.
Take some salt water, hook two wires to a 9 volt battery, and put the ends of the wire in the water Bubbles will come off of the - wire, while a yellow stain will come off of the + wire. The bubbles are hydrogen, the yellow is chlorine. Sodium Hydroxide is also produced, but is not visible. If you collect the bubbles in a little tube and ignite the gas, there will be a small pop. It is difficult to produce enough hydrogen to be dangerous with this setup.
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1. They can 'take it apart' by electrolysis and measure the resulting components.
2. They can burn hydrogen and oxygen, (only those present), and find that
they get water. DON"T TRY THAT AT HOME. The reaction can be explosive.
2. They can burn hydrogen and oxygen, (only those present), and find that
they get water. DON"T TRY THAT AT HOME. The reaction can be explosive.