INTRODUCTION TO
CHEMISTRY
What is chemistry?
Chemistry is the branch of science which deals with composition,
decomposition and properties of matter.
Or
It is a branch of science which deals with composition, properties
and changes of matter.
Note; in chemistry we study how different substances combine
with other substances to form new substances.
-
People who study chemistry are called chemists.
-
Material objects made by application of
chemistry, are fertilizers, pesticides, detergents etc.
What is importance of chemistry?
Chemistry is important for our lives and development due to;
1.
It helps in manufacturing of medicine to cure
sick people.
2.
It helps in manufacturing of cooking oil and
sugar in the food industry.
3.
It helps in manufacturing of detergents like
omo, Foma etc for cleaning purposes.
4.
It helps in manufacturing of fertilizers for agriculture
activity.
5.
It helps in manufacturing of chemical substances
which kill weeds and pests.
6.
It helps in manufacturing of fuel i.e. petrol
diesel etc
7.
It helps in manufacturing of shoes and clothes.
8.
We study chemistry in order to start career. For
example to be doctors, pharmacists, physicists etc.
9.
We study chemistry in order to answer question
about natural things i.e. why does iron rust?
REVIEW EXERCISE
1.
Define the following,
i.
Chemistry
ii.
Laboratory
2.
People who study chemistry are known as ……………………………..
3.
Mention different material/ objects made by
application of chemistry.
i.
………………………………..
ii.
………………………………...
iii.
………………………………..
iv.
………………………………..
v.
…………………………………
4.
Mention the importance of chemistry in your
daily life.
i.
……………………………………
ii.
……………………………………
iii.
…………………………………….
iv.
……………………………………
v.
…………………………………….
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