A lesson note on the topic mechanic

2. SS2PHY
LESSON CONTENTS
 Introduction to chemistry
 Meaning of chemistry
 chemistry as a science
 Why study Chemistry
 The scientific method
 chemistry in our lives
CHEMISTRY

3. THE NATURE OF SCIENCE
SS2PHY
The nature of science describe what science is,
how it works & how scientists can contributes to
scientific knowledge & scientific methods.
The study of science involves performing experiments
in the laboratory using different materials.
To understand the nature of science;
 Scientific knowledge is reliable, uncertain & ever
progressing.
 Science tries to bring about order in the world
 Laws are generalizations which are link to the way in
which the natural world behaves under certain
conditions.
 The development of science depends upon the time &
conditions in which scientists of the time live,

4. THE SCIENTIFIC METHOD
SS2PHY
This is a method through which scientists find
solution to a given problem. It follows;
 Identify a problem
 Make observations through information &
resources gathering
 Construct a hypothesis: this is a statement or
proposition which may not be universally true
 Plan & perform experiments to test the hypothesis.
 Collect and analyze data and then draw conclusion
 Communicate the result
proposed a theory

5. CHEMISTRY AS A SCIENCE
SS1PHY
The world chemistry has been derived
from the world alchemy which means
study of met. Chemistry is a major branch
of science. It is defined as the branch of
pure science that deals with the
composition of substances (matter) & their
properties & reactions. Those that study
chemistry are called chemists. Chemistry
has actually improve our requirements for
better living in many areas.

6. WHY STUDY CHEMISTRY
SS2PHYS
To solve numerous problems that man is
facing.
 To develop critical thinking skills.
 Able to evaluate claims made by companies
about their products.
 To know and appreciate the world around
you.
 To find alternative sources of fuel.
 Handling the removal of waste.
 Recycling of metals & other valuable
materials.
 Ensuring continuous supply of food.

7. CHEMISTRY IN OUR LIVES
SS2PHYS
About 99% of our body is made
of the elements CHOCaNP.
 The food we eat.
 The house we live in.
 The vehicle we ride in.
 drugs that help to cure illness
or alleviate their symptoms.

8. ADVERSE EFFECTS OF CHEMICALS
SS2PHYS
Pollution .e.g. CO2,CO, SO2
 Environmental degradation. e.g
crude oil.
 Ozone layer depletion by CFC.
 Drug abused. e.g cocaine.
 warfare instruments. e.g.
gunpowder
 harmful to our health. e.g. Pb in
paint & fuel.

9. APPLICATIONS & CAREER IN CHEMISTRY
SS2PHYS
Chemical engineering
 Consumer product chemistry
 Environmental chemistry
 Water chemistry
 Green chemistry
 Medical chemistry
 Oil and gas (petroleum )
chemistry
 Forensic chemistry

10. THANK YOU