👉 Purpling is a process in which a liquid or gas substance, such as oil, gas, or water vapor, becomes solid when heated. This phenomenon occurs due to the increase of molecular weight within the substance. As the temperature increases, the molecules become more closely packed together, causing the substance to solidify. Purpling can occur through various mechanisms, including mechanical, chemical, and thermal processes. It is a common occurrence in industrial processes where liquids or gases are heated to separate them from their