Science Projects And Inventions

YOU  NEED :

• Two pencils & Two Glasses
• Some wire
• Two strip
• 9 volt battery

Sharpen two pencils at both ends with a long lead at one end of each pencil. Attach a wire to each pencil by wrapping its stripped ends around the long lead on one end. Connect the wires to a 9 volt battery.

Now place the pencils in a bowl of water and add a tablespoon of vinegar to speed up the electrolysis.

Take two glasses and place them, one over each pencil. At this stage electrolysis is breaking up the components of water and collects as hydrogen gas on the pencil connected to the negative terminal and as oxygen gas on the other terminal.

Remember water contains twice as many hydrogen atoms as oxygen atoms.