Dry ice evaporating is endothermic-->+DeltaH
A sparkler burning is exothermic--->-DeltaH
The reaction that occurs in a chemical cold pack often used to ice athletic injuries is endothermic--->+DeltaH
Evaporation of a puddle is a physical process, not a chemical reaction. It is an endothermic process because it requires energy input to overcome the intermolecular forces holding the liquid molecules together.
in an endothermic reaction the reacting substances are releasing energy, making them feel cold. i don't know what you mean by evaporating heat, but you cannot create or destroy energy if that helps.
Endothermic reactions favor the reactants in a chemical reaction.
Endothermic, if the energy is in the form of heat.
Endothermic reactions are chemical reactions that absorb free energy, typically in the form of heat. These reactions require an input of energy to proceed. Examples include photosynthesis and the melting of ice.
Evaporation of a puddle is a physical process, not a chemical reaction. It is an endothermic process because it requires energy input to overcome the intermolecular forces holding the liquid molecules together.
in an endothermic reaction the reacting substances are releasing energy, making them feel cold. i don't know what you mean by evaporating heat, but you cannot create or destroy energy if that helps.
Things that release heat include fire, warm-blooded animals, and some chemical reactions like combustion. Things that absorb heat include ice melting, water evaporating, and endothermic chemical reactions.
An endothermic reaction contains more chemical energy.
Endothermic reactions favor the reactants in a chemical reaction.
The two kinds of chemical reactions are endothermic and exothermic. A chemical reaction that absorbs energy is called an endothermic reaction.
An endothermic reaction is a chemical reaction that absorbs energy. Such reactions usually produce a temperature drop.
Endothermic, if the energy is in the form of heat.
chemical
Endothermic reactions.Endo- means 'inside' which is where the energy ends up.Exothermic reactions give off energy. Exo- means 'outside'. Think that a spider sheds an 'exo'skeleton, or a skin on the outside.
physical
It would be endothermic. It is endothermic because it is cold and absorbs heat.