(A) Define chemistry.
(B) Describe the various branches of chemistry.
Ans:
Definition
Chemistry is the science which deals with the properties. composition and the structure of substances. It also
studies the physical and chemical changes in matter and the laws or principles which govern these changes.
Determination of composition
Determination of composition represents finding out percentages of elements and compounds in a sample of
matter.
Structure of matter
Structure of matter means the arrangement of atoms in matter.
Physical and chemical changes
Both physical and chemical changes may be brought about by the interaction of energy.
BRANCHES OF CHEMISTRY
To understand the widely spread complex subject of chemistry and to concentrate on its specific. aspects,
chemistry is divided into many distinct branches.
Scope
These branches have distinct areas of study for the scientists to focus on and to achieve breakthroughs and
advancements.
1.Physical Chemistry
Definition
"The branch of chemistry that deals with the relationship between the composition and physical properties of
matter along with the changes in them is called physical chemistry.
Scope:
This branch investigates how substances behave at atomic or molecular levels. It provides clear explanation
as to how fundamental physical laws governing our world cause atoms and molecules to show specific
characteristics and in turn react to give huge structures related to life.
Physical chemistry is also used to predict and change the rates of reaction and thus optimize the conditions to
(B) Describe the various branches of chemistry.
Ans:
Definition
Chemistry is the science which deals with the properties. composition and the structure of substances. It also
studies the physical and chemical changes in matter and the laws or principles which govern these changes.
Determination of composition
Determination of composition represents finding out percentages of elements and compounds in a sample of
matter.
Structure of matter
Structure of matter means the arrangement of atoms in matter.
Physical and chemical changes
Both physical and chemical changes may be brought about by the interaction of energy.
BRANCHES OF CHEMISTRY
To understand the widely spread complex subject of chemistry and to concentrate on its specific. aspects,
chemistry is divided into many distinct branches.
Scope
These branches have distinct areas of study for the scientists to focus on and to achieve breakthroughs and
advancements.
1.Physical Chemistry
Definition
"The branch of chemistry that deals with the relationship between the composition and physical properties of
matter along with the changes in them is called physical chemistry.
Scope:
This branch investigates how substances behave at atomic or molecular levels. It provides clear explanation
as to how fundamental physical laws governing our world cause atoms and molecules to show specific
characteristics and in turn react to give huge structures related to life.
Physical chemistry is also used to predict and change the rates of reaction and thus optimize the conditions to
