When wood is burned what produces heat?

Answer 1

It gives off heat.

Burning wood, or any other solid fuel is a difficult process involving many steps:

1. Heat is consumed in the process of destructive distillation to break the chemicals in the wood down into simpler ones.
2. Once destructive distillation has broken down some of the wood into combustible gasses, they escape forming a layer around the remaining solid wood.
3. The combustible gas layer mixes with oxygen in the air, forming a flammable gas mixture.
4. Heat is consumed igniting this flammable gas mixture.
5. The burning flammable gas mixture generates heat, soot, combustion products, etc.
6. Heat is consumed generating convection currents that carry away the soot, combustion products, etc. preventing them from suffocating the fire.
7. If the heat from the burning flammable gas mixture is enough to keep the destructive distillation of the solid wood, the ignition of the fresh flammable gas mixture produced, and convection currents to carry away the soot, combustion products, etc. all going then the fire will keep burning; otherwise it will go out.

As you can see, solid fuels like wood don't burn directly.

Answer 2

It is the gases in the wood that burn, and those materials in the wood that can be converted to gas.

*The 3 requirements for fire are: fuel (wood), oxygen (in the air), and a source of heat.

Answer 3

Wood burning is a form of combustion. Combustion is a chemical reaction with Oxygen that produces heat and light.

As wood is primarily made up of Carbon, Hydrogen and Oxygen the products of its burning are mainly Carbon dioxide and water.

For chemical reactions to occur the chemical bonds between all the reactants must first be broken. This breaking of bonds requires energy and is termed the endothermic stage as it takes in heat energy.

When the reactants recombine to form the products the formation of the new molecules gives off energy and is termed exothermic as it gives out energy.

The total amount of energy required to break the bonds between the molecules in wood and Oxygen is significantly less than the amount of energy produced from the formation of water and Carbon dioxide molecules. The net result of this is heat and light.

Answer 4

when u rub two pieces of wood together, then it makes friction. Friction is hot. it makes the wood hot and it starts to burn

Answer 5

it combines with oxygen.

Answer 6

It burns and turns black

Answer 7

The Heat cause wood to burn

Answer 8

Yes