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Evaporation Lab

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There are also some other common properties that are transitions from one state to another, such as vaporization, this is the process by which a liquid or in some cases a solid that can change into a gas. Evaporation is a similar form of vaporization. However, evaporation is defined as the process by which particles escape from the surface of a non boiling liquid and enter the gas state. Some lab experiments can be conducted to actually see the effects of evaporation. Like the liquid bromine lab where you add a small amount of liquid bromine into a bottle, and within a few minutes, the air above the liquid bromine will turn into a brownish-red color because some of the bromine molecules escaped from the surface of the liquid. These molecules then became gas molecules, or bromine …show more content…

The process of evaporation occurs because the particles of a liquid have different kinetic energies. In some cases surface particles with higher than average energies can overcome the intermolecular forces that bind them to the liquid. The particles can then transition into the gas state. Evaporation is an essential process in nature. For example in nature evaporation removes fresh water from the surface of a ocean, leaving behind a higher concentration of salts. In areas such as the tropics, evaporation occurs at a higher rate,resulting in the surface water to be saltier. All water that falls to Earth in the form of rain and snow has been previously evaporated from oceans, lakes, and rivers. Evaporation of sweat plays an important role in keeping a human cool. Sweat, which is mostly consisted of water, cools a human by absorbing body heat when it evaporates. Energy which is in the form of heat is absorbed from the skin, causing the body to cool down. As a liquid is cooled its viscosity normally increases, but viscosity also has a tendency to prevent

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