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What are some substances that do not undergo sublimation?
Answer:
Sublimation is the process of transformation directly from the solid phase to the gas phase without passing through the intermediate liquid phase. While many substances exhibit sublimation under certain conditions, there are also substances that do not undergo this process. Some substances that do not undergo sublimation include:
1. Sodium Chloride (NaCl): Common salt, sodium chloride, does not undergo sublimation. Instead, it melts at high temperatures (801 degrees Celsius) to form a liquid.
2. Sugar (Sucrose): Sugar, or sucrose, does not sublime. It melts upon heating, forming a viscous liquid.
3. Glass: Glass is an amorphous solid material and does not undergo sublimation. When heated, it softens and then melts rather than sublimate.
4. Wood: Wood does not undergo sublimation as it is composed of complex organic compounds that decompose upon heating rather than sublime.
These substances follow different physical transformations when exposed to heat, unlike substances that readily undergo sublimation like dry ice (solid carbon dioxide) or iodine.