2007-01-05 11:31:56 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
In the split second before it bursts into flames the moisture is evaporated by the heat shrinking the paper as the molecules that are left pull together causing the paper to curl. As more solid molecules are removed (in the smoke etc) the remaining molecules (carbon) pull together even tighter causing more curling. Your usually left with a much lighter, curled up, black piece of carbon quite smaller in size than the original piece of paper!
2007-01-05 11:45:17 · answer #1 · answered by Anonymous · 2⤊ 0⤋
The heated side loses water faster than the opposite side which then
shrinks and curls the sheet away from the heat. Try heating a plain sheet
of paper with a hair dryer to see what happens. Perhaps it will curl the
other way. Experiments can be very enlightening.
2007-01-06 22:02:36 · answer #2 · answered by Prasun Saurav 3 · 0⤊ 0⤋
The paper curls as the water quickly evaporates.
2007-01-05 19:52:09 · answer #3 · answered by whatever_9123 1 · 0⤊ 0⤋
When u place the paper on heat source , the surface exposed directly to the heat undergoes more heating when compared to the surface to its back. Due to differential heating, the two surfaces expand differently. The outer surface tries to expand more, while the inner one prevents it from expanding, causing the paper to curl.
2007-01-06 02:17:22 · answer #4 · answered by Poornima G 2 · 0⤊ 0⤋
cuz of loss of mositure.Depending on the degree of moisture,people curls more on either side
2007-01-05 19:41:13 · answer #5 · answered by jas_dynamicdynamite 1 · 0⤊ 0⤋
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2007-01-05 19:33:05 · answer #6 · answered by Anonymous · 0⤊ 0⤋
when water is lost from a substance it becomes brittle and hard so it curls its the reason...................
2007-01-06 10:33:06 · answer #7 · answered by santhosh 1 · 0⤊ 0⤋
uneven heating.
2007-01-05 19:33:29 · answer #8 · answered by Ricky J. 6 · 0⤊ 0⤋
CAUSE HEAT MAKES IT SHRINK!!!!!!!NOW!!!!!NEXT QUESTION????????????
2007-01-05 19:34:04 · answer #9 · answered by Anonymous · 0⤊ 0⤋