Question

Can matter change state?

Answer 1

Yes, all the physical states of matters are interchangeable with the help of physical factors like temperature and pressure.

• We have mainly three states of matter that is solid, liquid, and gas that can be converted into each other.
• Starting from solid if we want to convert it into liquid we can either increase temperature or decrease pressure and this process is known as melting.
• Similarly, if we want to convert liquid into gas either we can increase the temperature or decrease the pressure and this process will be known as vaporization.
• In revert, if we want to convert gas into liquid either we can decrease the temperature or increase the pressure and this process will be known as condensation.
• Similarly, if we want to convert liquid into solid either we can decrease the temperature or increase the pressure and this process will be known as freezing.
• One special condition is also there in which solid is directly converted into gas by either increasing temperature or by decreasing pressure and the process is known as sublimation.
• Similarly, the gas can be also directly converted into solid by either decreasing pressure or by increasing pressure and the process is known as a deposition.

$$\begin{gathered} \mathrm{Solid}\stackrel{\mathrm{melting}}{\to }\mathrm{Liquid}\stackrel{\mathrm{vaporization}}{\to }\mathrm{Gas} \\ \mathrm{Solid}\underset{\mathrm{Freezing}}{\rightleftharpoons }\mathrm{Liquid}\underset{\mathrm{Condansation}}{\rightleftharpoons }\mathrm{Gas} \\ \mathrm{Solid}\stackrel{\mathrm{Sublimation}}{\rightleftharpoons }\mathrm{Gas} \\ \mathrm{Solid}\underset{\mathrm{Deposition}}{\rightleftharpoons }\mathrm{Gas} \end{gathered}$$