Changing the Pressure
The physical state of matter can also be changed by changing the pressure. By applying high pressure the particles of a gas can be brought close together means gases can be liquefied easily by applying pressure and reducing temperature. When pressure is applied particles come together thus the force of attraction increases and intermolecular space decreases.
Hence, gas liquefies. When pressure around the solid carbon dioxide is reduced its temperature increases and it directly changes into carbon dioxide gas.
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States of Matter: Solid, Liquid, Gas and Plasma
Matter is made up of tiny particles. These particles are such small that we cannot see them by the naked eye. What ever we see in nature is made up of matter. Different matter exist in different form. These forms are called states of matter.
State of Matter or Phases of Matter is defined as the form in which the matter exists around us. There are commonly 3 states of Matter i.e. Solid, Liquid and Gas. Along with this, there are two more states of Matter i.e. Plasma and Bose Einstein Condensate.
We have explained the States of Matter in detail with diagram and properties below.