1 Differentiate between a) Reversible and irreversible changes b) Absorption and release of heat in a physical - Science - Changes Around Us

Question

1 Differentiate between
a) Reversible and irreversible changes
b) Absorption and release of heat in a physical change
c) Characteristics of physical and chemical changes

veena Vasandani · Accepted Answer

b) Absorption and release of heat in a physical
change

Change of state of a substance is a physical change
Interconversions between solid, liquid and gaseous state of a
substance involves either release of heat or absorption of heat
Molecules of a gas have the maximum energy followed by liquid and
solid form of a substance has the least amount of energy Conversion
of a solid into liquid and liquid to gas requires energy and thus
the process occurs with absorption of heat Conversion of gas to
liquid and liquid to solid involves release of energy in form of
heat

1. Differentiate between. a) Reversible and irreversible changes. b) Absorption and release of heat in a physical change. c) Characteristics of physical and chemical changes.

1. Differentiate between.

a) Reversible and irreversible changes.

b) Absorption and release of heat in a physical change.

c) Characteristics of physical and chemical changes.