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What is a change of state that reacts when energy is endothermic?
Wiki User
∙ 11y ago
An endothermic reaction is one that takes heat from its surroundings to increase the delta H or energy level. it causes the surroundings to lower in temperature as it absorbs heat from the surroundings e.g cooling packs. the change in state depends on what reaction is taking place,
e.g melting ice cubes - solid to liquid
boiling water - liquid to gas
(they both absorb heat to occur)
Wiki User
∙ 11y ago
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What has a change of state reaction that energy is endothermic?
absorbed
A change of state where energy is given off?
Endothermic Reaction. Exothermic is a chemical reaction in which energy must be provided.
An ice cube melts after being left on the table over an extended period of time Exothermic or endothermic?
The process of melting is endothermic because you are adding heat (or energy) to the object. When you add heat or energy to an object it begins to melt , Which tells you the object has reached its melting point or the temperature that the object melts at.
Is melting of candle an exothermic or endothermic reaction?
It is exothermic. When you put your hand close to the burning candle, does the air feel cooler or warmer? If it feels cooler, then it is drawing in heat and is endothermic (endo = in). If it feels warmer, then it is giving off heat and is exothermic (exo = out). (If the system is gaining energy (heat) than it is endothermic, releasing energy is exothermic.)
Is obtaining lime from limestone exothermic?
The hydratation of concentrated OH- and Na+ ions (by dilution) is exothermic, it gives an energetically prefered state of matter.(Hydratation is the extra surrounding of the ions by polar water molecules of the solvent).
A change of state reaction that absorbs energy is endothermic?
yes it is endothermic
The change in which ice absorbs energy and melts is?
An endothermic change; or a change of state. Endothermic because it absorbs energy. Change of state because ti changes from a solid to a liquid.
What has a change of state reaction that energy is endothermic?
absorbed
A change of state reaction of what Energy is endothermic?
absorbed
A change in matter in which energy is taken in is an endothermic change?
Its where heat is taken in in a reaction eg making a cake is an endothermic reaction as heat is taken in to start it ;)
Is sublimation exothermic or endothermic?
Sublimation is an endothermic phase transition from solid to gaseous state.
Which change of phase is endothermic?
is Absorbs If you are asking if a change of state is why a reaction may be endothermic, is not always true. It simply depends on what the change of state is to and what it is from, ex: a change from liquid to solid is usually exothermic because it losses energy as the particles slow down and draw near to eachother... and the opposite occurs from solid to liquid (or liquid to gas).
A change of state where energy is given off?
Endothermic Reaction. Exothermic is a chemical reaction in which energy must be provided.
Is burning gasoline an exothermic process or an endothermic process?
Solid to gas (sublimation) is endothermic (takes in heat).In other words:A phase change from the solid state to the gas state is endothermic.Sublimation is endothermic (takes in energy).Heat energy must be provided to make it work.When there is a change of state from a solid to a liquid, a solid to a gas, or a liquid to a gas, at a constant temperature, the process is endothermic NOT exothermic. It requires energy to break the intermolecular forces that keep the molecules together, and that reduces the temperature - heat is taken in.
An ice cube melts after being left on the table over an extended period of time Exothermic or endothermic?
The process of melting is endothermic because you are adding heat (or energy) to the object. When you add heat or energy to an object it begins to melt , Which tells you the object has reached its melting point or the temperature that the object melts at.
What do understand by glass transition temperature. Explain whether it is exothermic or endothermic?
glass transition is a change in state. when the state changes from crystalline or rather glassy to a rubbery like state. it should be noted that it is not melting. it is a state change and not a phase change. it is endothermic phenomena because heat is given to a system so that glass transition occurs. because no heat is released during the process it can not be considered to be endothermic.
What happens to the thermal energy of a substance during a change of state?
it will increase or decrease depending on the states. from solid --> liquid or liquid --> gas it is positive and endothermic, and thermal energy is increasing from liquid --> solid or gas --> liquid it is negative and exothermic, and thermal energy is decreasing
