The change during which heat is taken in is called as________change.
Fill in the blanks :
(a) The process of a liquid changing into a solid is called_______________
(b) A change which alters the composition of a substance is known as a _______________ change
(c) There is no change in the ____________of the substance during a physical change.
(d) The reaction in which energy is evolved is called_______________
(i)____________is always taken in or given out.If it is given out then heat or (ii)____________may be produced during chemical change.A chemical reaction involves the change of substances called (iii)____________ to a new a new substance called (iv)____________.This chemical change occurs as the atoms in the reaction undergo (v)____________.
The apparatus used to measure heat changes during chemical reactions is called
Give reasons for the following.
Heat supplied/released during a change of state is called latent heat.