2006-08-24 13:00:13 · 17 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
She lit a match and put it to the top of the beaker that had the water and then the top of the beaker stayed light. She promised that she didn't add anything and that it was still regular tap water.
2006-08-24 13:32:46 · update #1
FM = freakin* magic. There either was alcohol or lighter fluid, benzine, toulel, xylene, or any other clear flammable liquid was already in the beaker before adding the water. Just a coating on the glass will be enough. The lighter hydrocarbon or ester floats above the water and ignited.
Crys and Natasha obviously failed chemistry, oxygen does not burn. The hydrogen would ignite. Remember the Hindenburg newsreels? It's what put Lakehurst, NJ on the map. "Oh the humanity!!"
2006-08-29 03:51:41 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Did you observe the glass or container BEFORE your teacher added the tap water? Your teacher could easily have added some liquid hydrocarbon with a specific gravity less than unity in which case it would have floated (rather invisibly) to the top and then your teacher lit the "water.
2006-08-24 13:03:07 · answer #2 · answered by naked_in_lake 2 · 2⤊ 0⤋
OK that's it. FOR THE LAST TIME WHEN YOU THROW IN Na ETC. IT'S THE HYDROGEN THAT BURNS. OXYGEN IS FUEL, BUT HYDROGEN BURNS BETTER - THINK HYDENBURG PEOPLE!
most likely the beaker was coated with alcohol or hydrocarbon. either that or i wouldn't drink the water because it's really contaminated...
2006-08-25 06:24:47 · answer #3 · answered by shiara_blade 6 · 0⤊ 0⤋
If you separate the hydrogen and oxygen that make up water by hydrolysis with electrodes and current, The hydrogen can rapidly re-oxydized into water by combining with oxygen, burning. A hydrogen flame is invisible, be careful.
2006-08-24 13:05:58 · answer #4 · answered by helixburger 6 · 0⤊ 0⤋
Your teacher is playing games with you and turning the chemistry class into a magic show. I'm not impressed with that sort of nonsense as it doesn't teach anything useful.
Water does not burn with oxygen and is not flammable.
It does react with the Alkali metals however, producing hydrogen gas, which will burn.
2006-08-24 13:05:14 · answer #5 · answered by Alan Turing 5 · 0⤊ 0⤋
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2016-11-27 19:48:08 · answer #6 · answered by ? 4 · 0⤊ 0⤋
Maybe this water was really polluted and contains some oil or petrol. It has less denisity than water and don't dissolve - so can be on the top. and it's flammable.
2006-08-24 20:26:48 · answer #7 · answered by hi 2 · 0⤊ 0⤋
LOL...no your teacher must have separated H2O into its elements H2 and O if I am not mistaken O was the one that's flammable, since H2 evaporates rather quickly.
2006-08-24 13:10:57 · answer #8 · answered by Natasha B 4 · 0⤊ 1⤋
he may not have used tap water, or he broke it down into its basic flammable components. you cannot light tap water without its being mixed with something else or being broken apart
2006-08-24 13:04:34 · answer #9 · answered by imanalchemist 2 · 0⤊ 1⤋
Did he put two electrodes and a DC power source to it ? And then he light a match on one of the electrode and see combustion of hydrgen and oxygen ?
2006-08-24 13:03:33 · answer #10 · answered by Just_curious 4 · 1⤊ 1⤋