7:28 AM
M V Rao
Matter appears in different phases at different pressures and temperatures. For example, Water at normal temperature is in liquid form. If the temperature is increased then it transforms in to gaseous form. Water also transforms into vapor if the pressure is reduced. If the temperature is reduced below ℃ then water becomes solid ice. So, water exists in 3 phases, solid, liquid and gas.
Any system consisting of a single phase is called Homogeneous and any system has more than one phase of the substance is called Heterogeneous.
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2 comments:
Really the definition is very understandble
it is not like that , a phase can also be a mixture of two or more substances provided that the physical and chemical composition of the mixture does not change abruptly from one point to another inside the system . Thus mixture of air and water vapour is a homogeneous system .
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