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QUESTION

# Is an endothermic process an example of a physical or chemical change?

Endothermic just means that heat has to be supplied to the proces to keep it going. It can be fysical or chemical.

Examples of physical : The melting of ice, the evaporation of water.

Examples of chemical endothermic processes: The of water 2H_2O->2H_2+O_2 The 'burning' of limestone to get quicklime: CaCO_3->CaO+CO_2