why tea gets cooled when sugar is added to it?
Answers
Explanation:
Do you understand the principal of heat exchanging? If you do, then you understand why sugar cools down tea. The sugar exchanges its “coolness” for some of the tea’s heat. Then you put a spoon (which is also colder than the tea) into the tea to stir the sugar to make it dissolve. The spoon gains heat from the tea, making the spoon warmer and the tea cooler; ergo, heat exchanging. Now while the tea is sitting there innocently in the cup, the air sitting on the surface of the tea is also actively involved in heat exchanging as is the side of the cup which is busily exchanging heat with the air surrounding the cup. Eventually, as you can see, all the heat from the tea will soon be exchanged.
Tea gets cooled when sugar is added to it because -
• Tea's temperature is obviously greater than the sugar.
• So, when comparatively cold sugar is added into hot tea,the sugar granules absorbs some of the heat energy and gets dissolved into the tea.
• Due to heat exchange or heat absorption process,the total temperature of the tea gets down than the temperature which was before adding the sugar in the tea.