Question

which event is endothermic? the burning of a match the change of water vapor to a liquid the combustion of propane gas the melting of ice

Explanation:

Step1: Define endothermic process

An endothermic process absorbs heat from the surroundings.

Step2: Analyze burning of a match

The burning of a match is an exothermic reaction as it releases heat and light.

Step3: Analyze change of water - vapor to liquid

The change of water - vapor to liquid (condensation) is an exothermic process as heat is released when water vapor changes to a liquid.

Step4: Analyze combustion of propane gas

The combustion of propane gas is an exothermic reaction as it releases heat and energy.

Step5: Analyze melting of ice

The melting of ice requires heat to be absorbed by the ice to change from solid to liquid, so it is an endothermic process.

Answer:

D. the melting of ice