Question

Sort the phase change scenarios according to the direction of the heat flow in each case.

PART 1
Categories:
-Heat is transferred from the water to the surroundings when...
-Heat is transferred to the water from the surroundings when...
-No net of heat occurs when...

Options:
-...a cloud of steam condenses into liquid water.
-...a block of ice melts.
-...a puddle of water evaporates.
-...a block of ice sublimates into water vapor.
-...a puddle of water freezes into ice.

PART 2
Considering your answers above, what would be the effect of spraying liquid water on fruit trees before a frost?

a) It would tend to make the fruit freeze soiner.
b) It would help to prevent the fruit from freezing.
c) It would have no effect in the fruit.

sort thephase hange scenarios socodingtohe dr on of the heet nowheachas o the sumoundings when.. from the suroundings whn, dloud of steam condorses a puddle of water a block of ioe subiimates a puddle of water hnio waner wapor reeces in0 nto liquid mater block of ice melts Considering your answers show, what wedd 혜 the ered of spraying iquid wir an hk Inn tnbre a frusn O t wold lend to make the be rence soonm would help to prevent he fr谕hom Irening

Answer 1

PART-1 1. Heat is transferred from the water to the surroundings when- a cloud of steam condenses into liquid water and a puddle of water freezes into ice. 2. Heat is transferred to the water from the surroundings when - block of ice melts, a puddle of water evaporates and a block ofice sublimates into water vapor. 3. No net of heat occurs when -nothing. PART-2: Spraying fruit trees with water before a frost helps to protect the fruit from freezing because of the formation of an insulating layer of water vapor between the fruit and air. As a result, the temperature of the fruit is kept higher than that of the atmosphere. Correct option is (b).