Experiment Hydrogen and oxygen

Experiment Hydrogen and oxygen
 
Materials 

dry battery (1.5V), hydrogen peroxide, water tank, PET bottle (4), straw (4), dilute hydrochloric acid or diluted sulphuric acid, electric igniter  and plastic bag with zipper

Procedure 
 

1. Four PET bottles that make the cap the hole and pass the straw are prepared.
2. The manganese dioxide and the hydrogen peroxide are put in one PET bottle, and oxygen is collected in one PET bottle by the water substitution.
3. The zinc plate and the dilute hydrochloric acid are put in another PET bottle, hydrogen is collected in the PET bottle by the water substitution. 
4. Oxygen and hydrogen are quietly put into  the plastic bag with the zipper.
5. The igniter is inserted in the plastic bag. Ignite it.  

Science 

It is confirmed that wate r is produced after it explodes in the plastic bag.   

Question 

If only hydrogen is into the plastic ba g and is ignited, what will happen?  Precaution Surroundings of the straw close with the zi pper well so that the gas should not leak. The explosion becomes big if a lot of oxyge n and hydrogen are put, and the bag breaks out. Because the produced water changed into steam, the gas putting in the bag should be a proper quantity.   

Experiment Hydrogen and oxygen

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Experiment with Oxygen and Hydrogen

Oxygen and Hydrogen

Level Elementary

Concept

   Zinc and manganese dioxide can be taken out from the used dry battery. Oxygen and hydrogen are produced by using the acid, the hydrogen peroxide and the two materials of the dry battery. The property of oxygen and hydrogen is examined.

Working
Taking out zinc and manganese dioxide from the dry battery The dry battery is taken apart, and zinc on the surface and inside manganese dioxide, a carbon at the center, and an upper and lower iron plate are divided separately.

Experiment with Oxygen and Hydrogen tools

preparation of Oxygen

Materials 

dry battery (1.5V), dry battery (9V), hydrogen peroxide, water tank, PET bottle (2), straw, steel wool, spirit lamp, match,   deflagrating   spoon,   radio   pincers,   nippers,   and glass bottle

Procedure 
(1)The hole for the straw to the cap of the PET bottle is made.  Surroundings of the hole are closed with clay so that the gas should not leak here  through the straw.
(2)The water substitution is prepared by putting water in the water tank, and using the  PET bottle.
(3)The manganese dioxide and the hydrogen peroxide are put in the PET bottle, and the cap   with   the   straw is done.The produced oxygen should be collected in the PET bottle quickly. Because  the reaction will end in a short time, it is points.

Experiment with Oxygen

Experiment with Oxygen testing

Experiment 2

Preparation of Hydrogen 

Materials 

dry battery, dilute hydrochloric acid or dilute sulphuric acid , water tank, film case, test tube (2), match and nippers

 Procedure 

1. The hole is made for th e cap of the film case
2. The zinc plate is cut small by nippers
3. The zinc plate and the dilu te hydrochloric acid are put in the film case and cap it. 
4. If the vinegar is used for th e replacement of the dilute hydrochloric acid or diluted sulphuric acid, the hydroge n is produced slowly.
5. The film case is put in the water tank. the produced hydrogen is collected in the test tube by the water substitution.
6. The mouth of the test tube  is caped by using the thumb.
7. The match's fire is brought close to the mouth of the test tube,  the thumb is opened, and the reaction is seen. 
8. The reaction when half air is put in the test tube is examined, too.  

Question 

Why the difference of two reactions happens is discussed about.  

Preparation of Hydrogen diagram

Preparation of Hydrogen Testing

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