GEOLOGY

Detailed explanation-1: -Some of the gas molecules are condensed back into liquid water so there are less molecules of water in the gas phase inside the can. The cold water will also cool any remaining gas molecules, decreasing their kinetic energy and therefore decreases the number of collisions with the walls of the can.

Detailed explanation-2: -When water is cooled, the water molecules move slower and get closer together. This makes cold water more dense than room temperature water. Since cold water is more dense, it sinks in the room temperature water.

Detailed explanation-3: -The average kinetic energy of the atoms and/or molecules increases, roughly, in proportion to the absolute temperature: [eq] As the temperature increases, the diffusivity increases. Therefore, the water molecules of the hot water have more kinetic energy than the cold ones, and they oscillate more rapidly.

Detailed explanation-4: -Increasing the temperature of something makes these molecules and atoms move around more quickly, giving it more thermal energy. Hot water has more thermal energy than cold water. Colder objects’ molecules and atoms move more slowly and have less thermal energy than warmer objects.

Detailed explanation-5: -For other liquids, solidification when the temperature drops includes the lowering of kinetic energy, which allows molecules to pack more tightly and makes the solid denser than its liquid form. Because ice is less dense than water, it is able to float at the surface of water.