Sunday, May 2, 2010
Sunday, April 18, 2010
The Scientific Approach In Chemistry (Observation, Hypothesis Theory and Law)
Over the science has developed through a series of discoveries which started off as observed natural phenomenon which had to explained.This was done by using scientific method in systematic manner.
(1) Observation:
Different people observe a phenomenon in different ways.Some of us observe something very critically to extract from it a new point.Observation is a basic tool to go forth for elaborating a phenomenon but it may vary from person according to his own skill of elaboration.Observation is thing is one of the scientific approaches in chemistry.
(2) Hypothesis:
When phenomenon is observed; a scientific ponders over it and carries out relevant experiments.He sieves through the data and arrives at possible explanation for the nature of the phenomenon.This explanation ; which is still only a trial idea is called hypothesis.It may or may not undergo a change as a result further investigation and accumulation of more knowledge or facts.
(3) Theory:
The scientist conveys his hypothesis to other workers of the same field for the discussion and for further experimentation .When the hypothesis is supported by a large amount of different types of observations and experiments,then it becomes a theory.
(4) Scientific Law:
A theory which is tested again and again and found to fit the facts and from which valid predictions may be made is then known as scientific law or principle.
(1) Observation:
Different people observe a phenomenon in different ways.Some of us observe something very critically to extract from it a new point.Observation is a basic tool to go forth for elaborating a phenomenon but it may vary from person according to his own skill of elaboration.Observation is thing is one of the scientific approaches in chemistry.
(2) Hypothesis:
When phenomenon is observed; a scientific ponders over it and carries out relevant experiments.He sieves through the data and arrives at possible explanation for the nature of the phenomenon.This explanation ; which is still only a trial idea is called hypothesis.It may or may not undergo a change as a result further investigation and accumulation of more knowledge or facts.
(3) Theory:
The scientist conveys his hypothesis to other workers of the same field for the discussion and for further experimentation .When the hypothesis is supported by a large amount of different types of observations and experiments,then it becomes a theory.
(4) Scientific Law:
A theory which is tested again and again and found to fit the facts and from which valid predictions may be made is then known as scientific law or principle.
5 IMportant Branches Of Chemistry
Oragnic chemistry: is concerned with elements that contain carbon. this branch if chemistry is important to pharmaceutical, petrochemical and textile industies.
Inorganic chemistry: the branch of chemistry that is concerned on substances not containing carbon and are not organic substances.
Physical chemistry: deals with the discovery and description of the theoritical basis of the behaviour of chemical substances.
Biochemistry: is concerned on the composition and changes in the formation of living species.
Analytical chemistry: is the kind of chemistry that deals mostly with the composition of substances.
Inorganic chemistry: the branch of chemistry that is concerned on substances not containing carbon and are not organic substances.
Physical chemistry: deals with the discovery and description of the theoritical basis of the behaviour of chemical substances.
Biochemistry: is concerned on the composition and changes in the formation of living species.
Analytical chemistry: is the kind of chemistry that deals mostly with the composition of substances.
Saturday, April 17, 2010
What is Chemistry? (Definition and its Importance).
People of the industrialized nations have a higher standard of living than the human race has ever known.More nutritious food,better health,better life and much more oe this is due to chemistry.Chemis enables us to design all sorts of materials,drugs to fight disease,pesticides to protect to our health and fertilizers to grow our crops for abundant food,fuels for transporation,fibres to provide comfort and variety in clothes and a lot of other things.
Chemistry also help us to understand the nature of our environment and about ourselves.The theories of chemistry illuminate our understanding of the material world from tiny atom to giant galaxies.
DEFINITION:
Chemirtry is the branch of science that deals with the properties,composition and structure of matter.Chemistry also deals whth the changes involved in the matter.It also deals with the principles governing the changes which matter may undergo.
Chemistry also help us to understand the nature of our environment and about ourselves.The theories of chemistry illuminate our understanding of the material world from tiny atom to giant galaxies.
DEFINITION:
Chemirtry is the branch of science that deals with the properties,composition and structure of matter.Chemistry also deals whth the changes involved in the matter.It also deals with the principles governing the changes which matter may undergo.
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