Heat speeds up the decomposition process
There is no symbol that will show weather or not heat is needed in a decomposition reaction.
Solids melt on heating. A2. But if you are thinking of the destruction of the material, perhaps pyrolysis is what you seek.
The chemical decomposition process of a high explosive that is initiated by a stimulus such as heat, shock, or friction is called detonation. This rapid reaction releases a large amount of energy in the form of heat, pressure, and gases, leading to an explosive effect.
in English it is basically breaking something down using heat --------------- Thermal decomposition is a chemical reaction of decomposition under the effect of high temperature: the compound breaks down into other substances when it is heated. For example: copper(II) sulfide when heated produces copper + sulfur dioxide
Extreme heat and cold will effect compost formation. Many times I have measured very active compost piles, with sufficient moisture, at 120 degrees F. Temperatures above may begin to adversely effect decomposition, depending on moisture present. I do not know at what higher temperatures decomposition slows or stops. Cold temperatures slow the metabolism of decomposition organisms. Therefore compost formation eventually stops at temperatures approaching freezing. The decay organisms vary greatly and their heat/cold tolerances will vary also.
light will produces heat which will speed up the rate of decomposition.
TNT (trinitrotoluene) undergoes decomposition when subjected to heat or shock. This decomposition process leads to the formation of gases such as nitrogen oxides, carbon dioxide, and water vapor, as well as solid carbon residues. The energy released during the decomposition results in an explosive effect.
Pyrolysis
The correct equation for the effect of heat on CaCO3 (calcium carbonate) is: CaCO3 (s) -> CaO (s) + CO2 (g) This reaction represents the decomposition of calcium carbonate into calcium oxide and carbon dioxide upon heating.
Thermal Decomposition
Moisture and warm temperature speed decomposition. This is a form of abiotic decomposition as it employs a chemical or physical process without the involvement of micro-organisms.
Sodium chloride melts at 801 0C. Sugar melt rapidly and after 180 0C a thermal decomposition reaction occur, the final product being a coke.