why do things produce smoke when they are burnt?

Answer 1

Unburnt carbon due to incomplete combustion either due to insufficient oxygen or prevented by other matter(steam from moisture....)from coming into contact with oxygen.

Answer 2

Anything producing smoke is simply the contaminants of the object. For example, when wood burns, it releases carbon dioxide and carbon monoxide which (the carbon makes it look like smoke instead of just clear gas). The ashes left over are the purest substances of the wood, which are usually composed of carbon, because not all the carbon is attached to oxygen atoms when it burns.

Answer 3

as most of the respondent answered it is unburnt carbon particles in the material undergoing burning process.being light in weight these go up with the gases.
smoke can be reduced by crushing the material to get its powdered form as due to increase in the surface area now the reaction is more efficient and carbon gets burnt to a greater amount.

Answer 4

Smoke is made with tiny burnt particles. They rise up because they are hot and heat rises up, until they cool down enough to fall back down. Not all thing produces smoke when it is burnt (like metals and such...)

Answer 5

when a substance is burnt ,chemical reactions takes place.Depending upon the tempretature of the flame the matter burns,when the tempr is not high enough to burn the particles they rise up as tiny hot prticles along with the gases so we see the flame,the particles latyer cools down and form the soot.

Answer 6

simply, what u see are the carbon particles as smoke.... when something is burnt, only ashes remain at last...what happened to the mass of the object? just it has been converted into energy....by einsteins equation...e=mc2....the mass is converted into heat and light energy....and moreover all organic matter contains carbon as its ultimate making element and when burnt it turns as carbon dioxide or carbonmonoxide and what u see are nothing but those gases

Answer 7

good question
because when a compound is burnt(basically they r carbon compounds that r combustile) it does not burn completely some of the carbon gets left in the co2 evelved hence its blackish colour which v call smoke

Answer 8

the smoke is created by a chemical reaction and it is part of the remains of whatever was being burnt.,. . . . plus it also looks really cool

Answer 9

its a chemical reaction, that is just one of the molecular compounds of the substance being removed and released form the substance.

for example
when you burn wood it makes smoke, the smoke is carbon being released. so basically wood + fire = carbon (smoke) and ash

Answer 10

Ref: solid-liquid-gas stages, if gas is visible it is smoke - like some liquid gives fumes in room temperature like concentrated acid.