define the term:-heat of fusion. why amorphous solids have definite heat of fusion??
EXPERT ANSWER
It has been observed thattemperature remains constant till all solid melts into liquid. The heat supplied is used for changing a solid state into its liquid state by overcoming the particle-particle attraction force. The solid substance absorbs heat energy without showing any rise in temperature. This heat energy is called latent heat. The amount of heat required to convert a unit mass of a solid into its liquid state, without a change in temperature (i.e. at its melting point) is called the latent heat of fusion.
As amorphous solids are isotropic they will have same values of physical quantities such as, heat of fusion in all directions.
the answer provided by the mn expert is wrong as amorphous solids do not have a definite heat of fusion.
define the term:-heat of fusion. why amorphous solids have definite heat of fusion??
EXPERT ANSWER
It has been observed thattemperature remains constant till all solid melts into liquid. The heat supplied is used for changing a solid state into its liquid state by overcoming the particle-particle attraction force. The solid substance absorbs heat energy without showing any rise in temperature. This heat energy is called latent heat. The amount of heat required to convert a unit mass of a solid into its liquid state, without a change in temperature (i.e. at its melting point) is called the latent heat of fusion.
As amorphous solids are isotropic they will have same values of physical quantities such as, heat of fusion in all directions.
the answer provided by the mn expert is wrong as amorphous solids do not have a definite heat of fusion.
Heat of fusion is the amount of heat energy liberated or absorbed when a solid is converted to liquid.
In amorphous solid, the particles are not in regular arrangement and have irregular shape. The amorphous solids melt slowly over a temperature range, so they do not have definite heat of fusion
In amorphous solid, the particles are not in regular arrangement and have irregular shape. The amorphous solids melt slowly over a temperature range, so they do not have definite heat of fusion
