class 11 change of state

1. Change
Of
states
Hariharan.m
11104
11th A

2.  A physical alteration in a matter is said to be a
modification in the condition of the matter.
These alterations are reversible in nature and
do not entail any alterations to the chemical
composition of the matter. Moreover,
deposition, sublimation, melting, freezing,
vaporization, etc. are some of the examples of
evolutions in the state of the matter.

3.  The change of state from solid to liquid is
called melting
 The change of state from liquid to solid is
called fusion
 The temperature at which the solid and the
liquid states of the substance in thermal
equilibrium with each other is called melting
point
 The melting point of a substance at standard
atomspheric pressure is called its normal
melting point

4.  The change of state from liquid to vapour is called
vaporization
 The temperature at which the liquid and the
vapour states of the substance coexist is called
boiling point
 The boiling point of the substance at standard
atmospheric pressure is called normal boiling
point
 The change from solid state to vapour without
passing through the liquid state is called
sublimation and the substance is called to be
sublime

5.  A change of state is a physical change in the
matter that can be reversed as well. There are a
lot of processes for state change of matter such
as freezing, deposition, vaporization,
condensation, sublimation, and melting.