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Introduction to Chemistry
Transcript of Introduction to Chemistry
Some scientists say that chemistry is the root of all the sciences.
Chemistry is the study of the composition, structure, and properties of matter. It is also the study of the processes that matter undergoes and the energy changes that accompany these processes.
Six Branches of Chemistry
Study of carbon based substances
All other substances other than organic
3. Physical Chemistry
the study of the properties and changes of matter and their relation to energy
the identification of components and composition of matter
the study of the chemical processes in living things
the understanding of chemical reactions and processes in order to predict the properties of new substances
Basic research is used to increase knowledge and to
answer the question "WHY?"
Applied research is used to solve a particular problem
Atoms make up all substances
and are the building
blocks of matter
A substance is either an element or a compound
that cannot be changed by physical means.
Not the same thoughout
The same throughout
Science vs. Technology
Science is the pursuit
to gain knowledge
Technology is the applying the
knowledge to produce and use products.
The study of the properties
and changes of matter and their relation to energy
reactions and processes in
predict the properties
of new compounds
Solutions are homogeneous
Colloids are heterogeneous
mixtures that, like a solution,
will never settle out
The Tyndall Effect is the
scattering of light in colloids.
Milk is an example of the tyndall Effect
The Tyndall Effect
The visible particles
Muddy water is a suspension
Elements are substance
that are made up
of all the same kind of
Elements and their
combinations make up all matter
Compounds are substances
made of two or more
The ratio of these elements is always the same
ex. water is always 2:1 ratio
Depend on the amount of matter present
volume, mass, etc.
Properties that are not dependent on how much matter there is