where does the black stuff on burnt toast come from?

Question

when u accidently burn toast in your toaster where does the black stuff come from...how does it form?

Answer 1

the burnt parts is the carmelization of the sugars in the yeast of the bread.. if u smell the toast u get a slight sweetness coming off it.. when the sugars in the yeast gets over caramelized thats what causes the burning

Answer 2

Good old Wikipedia....


Combustion or burning is a complex sequence of chemical reactions between a fuel and an oxidant accompanied by the production of heat or both heat and light in the form of either a glow or flames.

In a complete combustion reaction, a compound reacts with an oxidizing element, and the products are compounds of each element in the fuel with the oxidizing element. For example:

CH_4 + 2O_2 \rightarrow \; CO_2 + 2H_2O + \textrm{heat}
CH_2S + 6F_2 \rightarrow \; CF_4 + 2HF + SF_6 + \textrm{heat}

A simpler example can be seen in the combustion of hydrogen and oxygen, which is a commonly used reaction in rocket engines:

2H_2 + O_2 \rightarrow \; 2H_2O + \textrm{heat}

The result is simply water vapor.

In the large majority of the real world uses of combustion, the oxygen (O2) oxidant is obtained from the ambient air and the resultant flue gas from the combustion will contain nitrogen:

CH_4 + 2O_2 + 7.52N_2 \rightarrow \; CO_2 + 2H_2O + 7.52 N_2 + \textrm{heat}

As can be seen, when air is the source of the oxygen, nitrogen is by far the largest part of the resultant flue gas.

In reality, combustion processes are never perfect or complete. In flue gases from combustion of carbon (as in coal combustion) or carbon compounds (as in combustion of hydrocarbons, wood etc.) both unburned carbon (as soot) and carbon compounds (CO and others) will be present. Also, when air is the oxidant, some nitrogen will be oxidized to various, mostly harmful, nitrogen oxides (NOx).

Answer 3

It comes from the burnt toast.

Answer 4

Its the carbon that is coming out or being burnt. So the carbon from the bread is what is showing. When anything is burnt it is a very rich, pure Carbon.

Answer 5

The black stuff is charcoal. Carbon-based substances, like wood and bread, turn into charcoal when burned or heated intensely.

Answer 6

It is just overly cooked toast which when u leave it on high it tends to get browner and browner and if u leave it in too long it's going to be black.

Answer 7

It is the bread burning. just like if you burn paper or anything else that can burn. It turns black and creates smoke.

Answer 8

it comes form the toast because the bread has fibers on them so while you are toasting the toast you are baking the fibers

Answer 9

The toaster?

Answer 10

the black stuff IS the burt toast duhhhh thats so ovious
how old are U