Thedecompositionof water is endothermic since energy is required to break up the bonds between the hydrogen and oxygen in the water molecule. Therefore the decomposition of water absorbs energy, making the reaction an endothermic one.
Well it all depends. Certain decomposition reactions (and by that I think you mean a compound breaking down into elements) are endothermic (as we would expect them to be, with the need of energy to be absorbed to break the bond) but others are quite exothermic. If you had to ask me, the first thing I would check would be the sign on the (delta)H. If the sign is (-), then the reaction is exothermic (think of it this way, energy being released, so it is subtracting -). If the sign is (+) then it would be endothermic (same concept as above). If the question doesn't specify, I assume they are looking for a generalized answer based on your simple logic of endothermic and exothermic reactions, and what a decomposition reaction looks like, and so the answer for that would be endothermic.
Deposition is phase change Gas to Solid. Heat is EXited, therefore, EXothermic reaction.
Rotting wood is exothermic. I cannot think of an endothermic decomposition, but that doesn't mean they don't exist.
Deposition (as a phase change) ix exothermic.
Deposition is exothermic.
Exothermic
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All thermal decomposition reactions are endothermic.
An endothermic reaction is one that requires energy to take place (e.g. light or heat energy); breaking bonds in a molecule is always endothermic; and energy is a reactant.Some examples of endothermic reactions are as follows:citric acid and sodium bicarbonate.ammonium chloride and watera chemical cold pack used in first aid kitsphotosynthesisbioluminescence by a firefly
Carbon into carbon monoxide and carbon dioxide
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
Water is a product of burning, neutralization reaction, thermal decomposition, etc.
This is a thermal decomposition reaction.
It is an endothermic reaction. An example is thermal decomposition.
An endothermic reaction is one in which thermal energy, or heat, is absorbed. If heat is absorbed in the reaction process, it is endothermic. By monitoring the temperature of the reactants in a reaction, an observer could identify an endothermic reaction through observation of a decrease in the temperature.
If thermal energy must be added to a chemical reaction for the reaction to take place the reaction is endothermic.
Exo- means out Endo- means in. In an Exothermic reaction thermal energy is released (goes out) and in an Endothermic reaction Thermal energy is taken up, transferring into chemical energy (goes in). So, to answer your question, no, the temperature does not go up in both an exothermic and an endothermic reaction.
Endothermic means absorbing thermal energy, so of course not. There is no such thing as sugar getting cold when it's burning. Burning sugar is exothermic, meaning it releases heat.
A chemical reaction that doesn't release energy is an endothermic reaction. There are few reactions that are endothermic compared to exothermic reactions (reactions that release energy as heat). Endothermic reactions actually take in heat from the environment and that is why you see a temperature drop. Examples of endothermic reactions: Electrolysis A reaction between ethanoic acid and sodium carbonate A thermal decomposition reaction (as you put heat into the reaction to break something down) Hope this helped.
Endothermic reactions need heat. Exothermic reactions give off heat.
The thermal decomposition of sodium carbonate is a chemical reaction according to the equation: Na2CO3 -> Na2O + CO2. The reaction is endothermic and therefore proceeds rapidly in the direction shown only in an environment from which ample heat energy can be absorbed.
When you heat calcium carbonate, to make it under go thermal decomposition, this is an endothermic reaction, because you are driving heat into the calcium carbonate.
This is because, all thermal decomposition ( and all decomposition processes ) is an exothermic process. Well, if you need a full explanation, here goes. More energy is given off to form bonds then taken in to break bonds hence it is an exothermic reaction. Also, decomposition gives off heat energy.
Thermal decomposition is a chemical reaction where a single substance breaks into two or more simple substances when heated. The reaction is usually endothermic because heat is required to break the bonds present in the substance.
Endothermic and exothermic reactions are similar in that both have reactants and products. They are different in that exothermic reactions release energy through reacting and endothermic reactions absorb it.