condensing means a substance changes from a gas into a liquid by decreasing heat energy & water is a kind of substance ->  water condensing means water changes from a gas into a liquid by decreasing heat energy  water condensing means water changes from a gas into a liquid by decreasing heat energy & water is in the gas state , called water vapor ->  water condensing means water vapor changes from a gas into a liquid by decreasing heat energy  water condensing means water vapor changes from a gas into a liquid by decreasing heat energy & dew is formed when water vapor condenses over night -> dew forming is an example of water vapor condensing