Question

what us sublimation explain with an activity

Answer 1

What is Sublimation?

Fill your ice cube trays with water, place them in the freezer, and the next day, you will have ice cubes formed through a process called freezing. If you drop those ice cubes on the floor, soon they will have melted into a puddle of water. Freezing and melting are two common phase transitions, or changes in the states of matter to or from solid, liquid, gas, or plasma.

Sublimation is another one of these phase transitions; except in this case, we have a solid turning directly into a gas. As a sublimating material changes from a solid to a gas, it never passes through the liquid state. This image shows water in its three forms: ice, water, and steam. Sublimation is just one of the ways water or another substance can change between its potential phases.



How Sublimation Works

Substances such as water and carbon dioxide (CO2) can be charted on a pressure versus temperature plot to reveal their state of matter (solid, liquid, or gas) at a given temperature and pressure. At a typical atmospheric pressure, we know that water is a solid at temperatures below 0 degrees Celsius, a liquid from 0 to 100 degrees Celsius, and a gas at higher temperatures. Atmospheric pressure, however, can change, particularly with altitude. Higher altitudes yield lower atmospheric pressures.

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Answer 2

Sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

Activity
naphthalene balls directly converted from solid form to gaseous form