Exothermic reactions release heat into the system, ie. heat is a product of the reaction and thus the products have less energy than the reactants and the change in enthalpy is negative.
Exothermic reactions release heat. Like potassium into water
Combustion is the reaction caused when gasoline is burned to release heat energy.
Exothermic, because energy is released into the surroundings.
an exothermic reaction
A chemical reaction
Petrol is a fossil fuel made from crude oil and burning fossil fuels produce energy so yes burning petrol does release energy.
Yes, because its still burning energy.
Gasoline is not turned into energy. When we burn gasoline, it reacts with oxygen, breaking down and combining with it to become water vapor, carbon dioxide, and carbon monoxide. As this happens, energy stored in the chemical bonds is released. The new bonds in the products of this reaction do not contain as much energy.
Usually by burning it.
Nothing is burned in any nuclear process; burning implies combustion, and this is only a chemical reaction. Fusion involves the combination of two nuclei into one, with the release of some energy.
an exothermic reaction
an exothermic reaction
Water is created in the chemical reaction of gasoline 'oxidizing' (burning).
Gasoline is a combination of several hydrocarbons which when oxidized (chemical reaction) release heat energy.
how chemical energy produce in firewood useful
Gasoline is an example of energy being released by and exothermic reaction. Which is caused by the breaking of bonds and the creation of new bonds which use a lesser energy to form than the energy release by the previous bonds.
Burning of coal is an exothermic chemical reaction (with release of heat).
Nothing "creates" energy. The chemical energy in gasoline can be converted to electrical energy by burning the gasoline in an internal combustion engine that's connected to a generator.
Chemical energy to mechanical energy
Yes burning of coal is an exothermic reaction because energy is released in this process in the form of heat and light.
It is not. Gasoline is not energy. Rather, it HAS energy.If gasoline is burned or otherwise combines with oxygen, energy is released. This type of energy (related to how atoms are connected with one another) is called "chemical energy".
Burning release heat, the molecular structure of methane is destroyed and the bonding energy is released.