required for a fire is, hydrogen, oxygen, lignin or nitrogen?

Answer 1

oxygen and a fuel, which would be any flammable substance.

Answer 2

Strictly speaking, the only elements required for a combustion reaction (fire) is fuel, oxygen, and a source of ignition. So some extent, one can also include oxidizing substances which will allow a fire to burn without an external oxygen supply.

However, if you are talking about a camp fire (i.e. a wood burning fire) then I would agree that lignite is required. However, it only works with a wood fire. You would be hard pressed to find lignite in, say, kerosene which burns quite readily. Lignite is the fuel; oxygen and an ignition source (like a match) are also required.

Answer 3

The answer is Lignin.

Lignin is a chemical compound that is most commonly derived from wood and is an integral part of the cell walls of plants, especially in tracheids, xylem fibres and sclereids. It is the second most abundant organic compound on earth after cellulose. Lignin makes up about one-quarter to one-third of the dry mass of wood, and is the only essential ingredient in sustaining a fire. (This is why, until the turn of the century, fire-engines were commonly called "Lignin Vans")

Answer 4

the three sides of the "Fire Triangle" are fuel, oxygen, and heat. Any fire needs oxygen, but hydrogen I know is a good fuel... could also be several other materials

Answer 5

THE FIRE REGUIRED:

1) OXYGEN
2) HEAT OR IGNITION
3) MATERIAL

NITROGEN IS NOT IGNITE THEY USE IT IN FIRE FIGHTING.
HYDROGEN IS FLAMABLE GAS (THAT MEAN IT IS ONE OF THE MATERIAL LIKE WOOD, PAPERS...ETC).

Answer 6

oxygen...