Which of the following is true of evaporation? A. It is considered a cooling process and it raises the average kinetic energy of the liquid because the higher energy molecules turn to vapor. B. It is considered a heating process and it lowers the average kinetic energy of the liquid because the higher energy molecules turn to vapor. C. It is considered a cooling process and it lowers the average kinetic energy of the liquid because the higher energy molecules turn to vapor. D. It is considered a heating process and it lowers the average kinetic energy of the liquid because the lower energy molecules turn to vapor.

C

Explanation:

C. It is considered a cooling process and it lowers the average kinetic energy of the liquid because the higher energy molecules turn to vapor.

Moreso, evaporation does not increase the average kinetic energy because it is a surface phenomenon. Also, as molecules excape at a fast moving rate, the left over molecules have a lower kinetic energy and this consequently decreases the temperature of the liquid.

When molecules absorbs heat, the evaporate and this phenomental process provides cooling in the system

Explanation:

Elements of group 1 are known as alkali metals and these include elements like lithium, sodium, potassium, rubidium, cesium, and francium.

Halogens are the elements of group 17 and each element of this group contains 7 valence electrons. For example, fluorine, chlorine, bromine, and iodine are all halogens.

Group 3-12 contains elements like scandium, titanium, vanadium, chromium etc. All these elements are also known as transition elements.

Noble gases are the gases that belong to group 18. Elements of this group are helium, neon, argon, krypton, xenon etc. All the gases are compressible in nature as they have large gaps between each molecule. Hence, they are easily compressible.

Elements of group 2, that is, alkaline earth metals contain two valence electrons. Elements of this group are beryllium, calcium, magnesium, strontium etc.

Thus, given families are matched as follows.

Group 1 - Alkali metalsNon-metals with 7 valence electrons - HalogensGroup 3-12 - Transition metalsCompressible gases at room temperature - Noble gasesMetals that lose two electrons with forming ions - Alkaline earth metals