Admin Table of Contents [hide]
Do metals sublimate?
Typical metals will sublimate at higher temperatures, which is why you don’t observe it under regular conditions. Furthermore, at least some of them would start to react with oxygen.
Do all substances undergo sublimation?
Almost all solids can go through sublimation, under certain conditions. At standard, atmospheric pressure, a few solids which will sublime are iodine (at slightly higher than room temperature), carbon dioxide (dry ice) at -78.5 degrees Celsius, as well as naphthalene (used in mothballs) and arsenic.
What are the properties of organic compounds which can undergo sublimation?
Compounds that are capable of sublimation tend to be those with weak intermolecular forces in the solid state. These include compounds with symmetrical or spherical structures. Examples of compounds that can be sublimed are in Figure 6.28.
Does silica undergo sublimation?
Explanation: Silica does not undergo sublimation on heating.
Under what conditions does sublimation occur?
Sublimation occurs more readily when certain weather conditions are present, such as low relative humidity and dry winds. Sublimation also occurs more at higher altitudes, where the air pressure is less than at lower altitudes. Energy, such as strong sunlight, is also needed.
What conditions must be met for sublimation to occur?
Low temperatures, strong winds, intense sunlight, very low air pressure — just the recipe for sublimation to occur.
What elements can undergo sublimation?
Sublimation process A range of solids, including water, iodine, arsenic, and solid carbon dioxide (dry ice), can sublimate at normal temperatures and pressures.
What conditions are needed for sublimation to occur?
Sublimation occurs more readily when certain weather conditions are present, such as low relative humidity and dry winds. Sublimation also occurs more at higher altitudes, where the air pressure is less than at lower altitudes. Energy, such as strong sunlight, is also needed.
What is the difference between sublimation and deposition?
For those of us interested in the water cycle, sublimation is most often used to describe the process of snow and ice changing into water vapor in the air without first melting into water. The opposite of sublimation is “deposition”, where water vapor changes directly into ice—such a snowflakes and frost.
What is the relationship between sublimation and the water cycle?
Sublimation and the Water Cycle. Sublimation is the conversion between the solid and the gaseous phases of matter, with no intermediate liquid stage. For those of us interested in the water cycle, sublimation is most often used to describe the process of snow and ice changing into water vapor in the air without first melting into water.
What solids can be made to sublimate?
A number of solids are capable of sublimating at normal temperatures and pressures, including snow, iodine, arsenic, and solid carbon dioxide (dry ice). Sometimes other materials can be made to sublimate by creating low pressure conditions.