condensing means a substance changes from a gas into a liquid by decreasing heat energy0 & temperature is a measure of heat energy & colder means lower in temperature ->  colder means a decrease in heat energy  colder means a decrease in heat energy & air is rising to a colder region ->  the heat energy of the air will decrease when air is rising to a colder region  condensing means a substance changes from a gas into a liquid by decreasing heat energy1 & water vapor is found in the atmosphere ->  air contains water vapor  the heat energy of the air will decrease when air is rising to a colder region & air contains water vapor ->  the water vapor in air will decrease in heat energy when air is rising to a colder region  condensing means a substance changes from a gas into a liquid by decreasing heat energy & water is a kind of substance ->  water condensing is when water changing from a gas into a liquid by decreasing heat energy  water condensing is when water changing from a gas into a liquid by decreasing heat energy & water is in the gas state , called water vapor & water is in the liquid state, called liquid water ->  water condensing is when water changing from water vapor into liquid water by decreasing heat energy  the water vapor in air will decrease in heat energy when air is rising to a colder region & water condensing is when water changing from water vapor into liquid water by decreasing heat energy ->  air rising into a colder region will cause the water vapor in air to condense  air rising into a colder region will cause the water vapor in air to condense & clouds are formed by water vapor rising into colder regions of the atmosphere and condensing into rain droplets -> air rising into a colder region will cause the water vapor to condense into rain droplets