Extinguishers

extinguishers
Extinguisher

QUESTION:

What will happen if we put a candle next to a mix made of bicarbonate and vinegar?

Hypothesis:

We think if we put the candle next to theextinguisher that is de mix of vinegar and bicarbonate the candle goes out.

Background research:

The hand-held fire extinguisher is simply a pressure vessel from which is expelled a material (or agent) toput out a fire. The agent acts upon the chemistry of the fire by removing one or more of the three elements necessary to maintain fire commonly referred to as the fire triangle. The three sides ofthe fire triangle are fuel, heat, and oxygen. The agent acts to remove the heat by cooling the fuel or to produce a barrier between the fuel and the oxygen supply in the surrounding air.

Once thefire triangle is broken, the fire goes out. Most agents have a lasting effect upon the fuel to reduce the possibility of rekindling. Generally, the agents applied are water, chemical foam, dry powder,halon, or carbon dioxide (CO2). Unfortunately, no one agent is effective in fighting all types (classes of fires. The type and environment of the combustible material determines the type ofextinguisher to be kept nearby.





Materials:

• Candle

• Bicarbonate

• Vinegar

• bottle

• Match

• Straw

• Napkin

• Thread

• ClayProcedure:


1. You put vinegar inside the bottle


2. Open a napkin and in the middle of it you put bicarbonate, then you tie the napkin.


3. Then inside the empty bottle you put thebag of bicarbonate (the one you make with the napkin)making sure you leave a part of the thread outside and that it doesn’t touch the vinegar.

4. Then you put the clay in the mouth of thebottle.



5. Next you put the straw inside the the bottle.



6. Then you turn on the candle



7. Next you shake the bottle




8. Put the straw next to the candle...