Why some materials burn and why some do not? give reasons.​

Every material burn you can tell which can't
only water it also boil
some have high boiling point

All substance burn on there ignition. temperature..so those objct have ignition they burn

Because they have high melting point

Coz the ignition temparature of all the materials r not same
the materials whose ignition temparature is low catches fire easily

PLZ MARK IT AS BRAINLIST

Heya

Your answer is given below :




=> a flame is defined as a reason where combustion of gaseous substances takes place.hence, if flame is produced when gaseous substances Burn all the gaseous fuels burns with a flame all the solid and liquid fuels will burn with flame when the substances fuels vaporisers on heating for example, cooking gas LPG burns with a flame a wax candle burns with a flame because on heating
Vapourise.

the colour of the flame of the fuels maybe Yellow or blue then the fuels are burnt completely in excess of air or sufficient supply of air. blue coloured flame is produced. this will not give much light and is known as non luminous flame.LPG should burn with flame blue flame if all the pores of cooking gas stove are well cleaned.

When the fuels are burnt in completely in the Limited supply of air, yellow coloured flame is produced the yellow colour of the flame is due to the glow of heat unburnt carbon.this produces a large amount of heat light and hence it is called Luminous flame.

during the burning of wax is in candle wax is first vaporized, which produces a flame during this incomplete combustion of wax a small amount of unburnt carbon particles are produced.these solid unburnt carbon particles glow in yellowish light. the environment carbon particles have the candle flame as soot and smoke.

solid and liquid fuels which do not vaporize on heating burnt without flame.for example, coal, charcoal contains some volatile substances so on heating first these volatile substances get burnt with flame in the beginning when all the volatile substances get burnt, no flame is produced and hot coal charcoal produce heat without any flame.




Thanks

It depends on the temperature of the reaction, and its byproducts.

The classic orange flame is produced by tiny nonreactive particles (soot) heated to around 2,000°F. They glow for the same reason all hot things glow: they give off blackbody radiation. Blackbody radiation gives off radiation at a wide range of frequencies, but peaks at a range determined by the temperature. For hot things in most fires, that peak is in the infrared, but there's also some in the red-orange range. The temperature is about 1300K, near the lowest curve in this graph:

A fire that burns very hot, especially if it gets a lot of oxygen, can produce white flames (a mix of all colors). Other colors come from the particular electron configurations of atoms and molecules from other materials in the wood:
or from unstable combustion products like CH and C2.

Chemical reactions that don't get hot enough to produce a visible glow, or which don't produce sufficient amounts of gaseous byproducts, don't produce flames. Hot coals, for example, burn at a distinctive red-hot temperature:

but the waste products are nearly pure CO2 and H2O. They're initially quite hot, but diffuse enough that they cool quickly out of the temperature range you can see.

It depends on the temperature of the reaction, and its byproducts.

The classic orange flame is produced by tiny nonreactive particles (soot) heated to around 2,000°F. They glow for the same reason all hot things glow: they give off blackbody radiation. Blackbody radiation gives off radiation at a wide range of frequencies, but peaks at a range determined by the temperature. For hot things in most fires, that peak is in the infrared, but there's also some in the red-orange range. The temperature is about 1300K, near the lowest curve in this graph:



A fire that burns very hot, especially if it gets a lot of oxygen, can produce white flames (a mix of all colors). Other colors come from the particular electron configurations of atoms and molecules from other materials in the wood:



or from unstable combustion products like CH and C2.

Chemical reactions that don't get hot enough to produce a visible glow, or which don't produce sufficient amounts of gaseous byproducts, don't produce flames. Hot coals, for example, burn at a distinctive red-hot temperature:



but the waste products are nearly pure CO2 and H2O. They're initially quite hot, but diffuse enough that they cool quickly out of the temperature range you can see.

Somd at conductors and some are non conductor of heat