Question

Matter can change its state by application of ___________ and ___________ or both.

• A. temperature
• B. pressure

Answer 1

Matter changes from one state to another by changes in temperature and pressure.

• Solid on heating changes to liquid and liquid on further heating changes to gases.
• In the same manner, gases on compression mean applying pressure changes to liquid again.

$\mathrm{Solid}\underset{\mathrm{Increasing}\mathrm{pressure}}{\overset{\mathrm{Increasing}\mathrm{temperature}}{\rightleftharpoons }}\mathrm{Liquid}\underset{\mathrm{Increasing}\mathrm{pressure}}{\overset{\mathrm{Increasing}\mathrm{temperature}}{\rightleftharpoons }}\mathrm{Gas}$