pressure the temperature determine the state of a substance . explain this in detail.
Answers
>> A solid can be converted into liquid and then to gas by decreasing the pressure and increasing the temperature.
>>A gas can be liquefied by increasing the pressure and decreasing the pressure.
>> Same is the method for converting a liquid into a solid.
>> Every state of matter of any substance is stable at a corresponding pressure and temperature. Thus, temperature and pressure determines the state of a substance.
Hope it helps !!
1) Any matter i.e., solid, liquid or gas when experiences an increase in temperature then they change their state.
Take ice cubes in a beaker or heat them slowly, the temperature increases and the ice melts to form liquid. Heat this liquid further it will become steam.
(2) On lowering down the temperature of any matter, show change in their state
Take the steam that is coming out of a boiling water and allow it to cool down, it condenses to form water and on further cooling of this water we get ice.
(3) On applying pressure and reducing temperature we can liquefy gases or change them into solid.
Example: Take carbon-dioxide gas, reduce its temperature and apply lot of pressure on it so that it changes into solid carbon dioxide, called dry ice, which is used as refrigerant for cooling.
If the pressure on it is decreased it directly changes into gas.
In LPG cylinders, the petroleum gas is cooled and with lot of pressure changes it into liquid state.
While using this LPG, we release the pressure exerted on it and hence it comes out in the form of gas..