Chemistry Practicals Class 9

Sublimation of Camphor

  • Teach science experiments in a gamified way
  • Boost conceptual clarity and knowledge retention
  • Aligned with National Education Policy 2020
  • Helpful in getting NAAC accreditation
  • CBSE, ICSE, and state boards aligned curricula
  • Engaging simulations with easy-to-teach instructions

About Simulation

  • Through this simulation, you will witness camphor crystals directly transitioning from solid to gas, depicted through animated visuals.
  • You can observe the sublimation process, where the solid camphor disappears without forming a liquid phase, providing a clear demonstration of sublimation.
  • The interactive nature of the simulation offers an engaging platform for understanding sublimation without requiring physical materials. This ensures a safe and accessible learning environment where users can explore phenomena such as sublimation interactively.
  • Explore the various factors influencing sublimation, including temperature and pressure, to understand how external conditions affect this phenomenon.

Chemistry Practical Class

  • Delve into the unique characteristics of substances capable of sublimation, gaining insights into their properties and behaviours in different states.

Simulation Details

Duration – 30 Minutes
Easily Accessible
Languages – Odia & English
Platforms – Android & Windows


Sublimation is a process in which a substance transitions directly from a solid to a gaseous phase without passing through the liquid phase. This physical change occurs when the substance is heated to a temperature that allows its particles to gain enough energy to break the intermolecular forces holding them in a solid state. Sublimation is the reverse process of deposition, where a gas transitions directly to a solid without becoming a liquid.

Chemistry Practical Class

The enthalpy of sublimation is the energy that is computed. Only pressures and temperatures lower than a substance’s triple point can cause sublimation. A substance’s triple point is the pressure and temperature at which it will exist in its three phases—the solid, gaseous, and liquid phases. Below the triple point, solid water sublimates when its temperature rises and turns into gas.

Chemistry Practical Class

Example:Ammonium chloride changes directly from solid to gaseous state on heating. Hence, on heating ammonium chloride, it gets converted into white vapours. The gaseous form of ammonium chloride can be cooled quickly to get a pure solid.

Ammonium chloride is NH4Cl, decomposing into ammonia and hydrochloric acid when heated by thermal decomposition.

Chemistry Practical Class

This dissociated molecule recombines on cooling to form NH4Cl.

Dissociation is a physical change that is also a chemical change because the change is reversible.

Watch this video to learn more about chemistry.

Requirements for this Science Experiment

Camphor China dish Bunsen burner Wire gauze Tripod Stand Cotton plugs Funnel

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