2007-01-29 22:30:19 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
When superglue hardens in contact with the moisture in the air it causes an exothermic reaction - which means it generates heat. When the glue is used on a non-porous surface it sets at a relatively slow rate and so the heat has time to dissipate. However when it is put on cotton wool the glue spreads over each fiber creating a huge surface area on which the reaction takes place and the total quantity of glue sets off very quickly. It is so quick that the heat generated does not have time to dissipate into surrounding solid material and so feels hot to the touch.
2007-01-29 23:33:10 · answer #1 · answered by U.K.Export 6 · 1⤊ 0⤋
What is cotton wool.. Wool is from a sheep, cotton is from a plant?
2007-01-30 07:08:42 · answer #2 · answered by robtiger2 4 · 1⤊ 0⤋
Chemical reation maybe.
2007-01-30 06:33:01 · answer #3 · answered by Krayden 6 · 0⤊ 0⤋
could it be a chemical reaction due to static
2007-01-30 06:33:55 · answer #4 · answered by danonwheels 2 · 0⤊ 1⤋