Astronomy Biology Chemistry Physics Pure Applied Knowledge Technology
Chemistry Is . . .
. . . the science that investigates
the composition and interaction of
existing compounds and elements
and engages in the synthesis and
analysis of natural and artificial
OR It is the study of MATTER .
What Is This ‘Stuff’ We’ve Called Matter?
One way of defining matter is as the
stuff of which everything is made.
Another way to define it is as anything that you can detect with your senses (with the possible exception of sound ); this alternative gives rise to some very interesting questions . . .
The Interesting Implications of the Alternative Definition:
Light can be perceived by our sense of sight
-- does this mean that light is matter?
What proof can you offer if you say it is?
Air can be perceived by our senses in various ways -- does this mean that it is matter? What proof can you offer if you say it is?
The Branches of the Chemis - Tree Inorganic Organic Biochem. Analytical Physical
The Branches Defined:
Organic -- Biochem. -- Analytical -- Physical -- The study of all of the modern elements but carbon . The study of the chemistry of carbon and its compounds. The study of the chemistry of living things . Answers the questions “ What’s there ?” and “ How much ?” Uncovers the physical laws underlying changes in matter.
The Purposes of Chem Lab
To help students visualize chemistry
(You learn by doing.)
To develop the ability to solve problems
To develop certain techniques
(measurement, purification, etc.)
which are essential to chemistry
To promote a teamwork approach to doing science (Cooperative learning)