Method:

1) Put a good bit of salt into your margarine tub.

2) Add hot water until the tub is half full.

3) Get one of your batteries and two pieces of wire. Connect the wire to each terminal of the battery.

4) Get your other battery and your last piece of wire and put the piece of wire on to the minus terminal so that the plus is facing to the minus of the first battery.

5) Put both stray ends of the wire into the tub.

6) After a minute, dunk your test tube into the water. Make sure there is no air left in the tube.

7) Put the minus piece of wire up the test tube and make sure the other piece of wire's in the salty water.

8) Lean the tube against the edge of the tub when it is full of water with the wire in it. Wait until there is no water left (in other words, until it has filled with hydrogen gas) and put your finger on to the bottom so no hydrogen escapes. Put a match to it and se what happens!

Result: When the two pieces of wire go into the water, the wire going from the minus fizzes a lot. The surface of the water turned orange/green. When the test tube is leaning against the side with the wire in it, the water starts to disappear as hydrogen gas starts to fill it. When you put a match to it, it goes POP!!

Conclusion: The electrolyte separates the hydrogen and the oxygen. The hydrogen takes over the tube and pushes the water out. When the match is put to the hydrogen it pops to show that it is a flammable gas.

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