Question

(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 ..............​

Answer 1

Answer:

a. chemical

b. state

c. kinetic

Answer 2

Answer:

c. physical properties

d.exothermic reaction