Silicon is an element - endothermic or exothermic is meaningless.
Single replacement reactions can be either endothermic or exothermic, depending on the specific reaction. The energy change of the reaction will determine whether it is endothermic (absorbs heat) or exothermic (releases heat).
The combustion of hydrogen is exothermic because it releases energy in the form of heat and light during the reaction.
The dissolving of calcium chloride in water is exothermic, meaning it releases heat. This is because the process of dissolving calcium chloride is accompanied by the breaking of ionic bonds, which releases energy in the form of heat.
The decomposition of phosphorus pentachloride (PCl5) is endothermic because it requires energy to break the bonds holding the compound together. This process absorbs heat from the surroundings, resulting in a decrease in temperature.
The dissolving of sodium thiosulfate in water is an exothermic reaction. This means that heat is released during the process as the sodium thiosulfate molecules form bonds with water molecules.
Freezing is exothermic, as the substance that is freezing loses energy to its surroundings.
The opposite of exothermic is endothermic. Exothermic reactions are those which give off energy in the form of heat. Endothermic reactions require energy.
endothermic
endothermic
it is an endothermic
Exothermic/endothermic is a process not a feeling.
Exothermic
exothermic
exothermic
Exothermic phenomenon
endothermic but don't know why? As AN crystals are formed the reaction is exothermic. Endothermic when it melts back with water. This is the reason AN is used in cold packs.
EXOTHERMIC: any combustion ENDOTHERMIC: evaporation of liquids