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In an exothermic process, heat is released by the process to the surroundings. An example of an exothermic process is burning wood. An endothermic process requires the input of heat from the surroundings. An example of an endothermic process is boiling water. Which of the following is an endothermic process?
- detonation of an explosive
- melting ice
- burning paper
- the formation of helium on the sun
- freezing water