What is Chemistry?

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What is Chemistry?

• The study of the composition, structure, and
  properties of matter, the processes that matter
  undergoes and the energy changes that accompany
  these processes.
• It is a physical science however.
• It is the CENTRAL science a vital part of
  biology, ecology, physics, and medicine.
• It is also a part of our everyday lives the
  food you eat, gasoline for your car, make up you
  wear, etc.

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What is matter?

• Anything that has mass and takes up space
• People
• Air
• A desk
• flowers
• Examples of things NOT matter
• Electricity Thoughts

3
Mass vs. Weight

• Mass is the amount of matter in an object and is
  not dependent upon location.
• If two objects are the same size, how can you
  tell which has more mass?

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Weight is the measurement of the pull of gravity
on an objects mass. Weight can change depending
upon where you are!
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Now you see it now you dont

• Matter acts at the macroscopic level what you
  see with the naked eye
• Fire

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• Matter also acts at the microscopic level you
  must have a microscope to see it

Crystalline Structure Brownian Motion
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But MOST chemistry occurs

• At the submicroscopic level so tiny even the
  most powerful microscopes cannot show it to us.
• Individual atoms
• Electron movement

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The structure, composition and behavior of all
matter can be explained on a submicroscopic level.

• Chemistry attempts to explain these
  submicroscopic events that lead to macroscopic
  observations.

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Branches of Chemistry

• 1. Organic study of carbon chemicals
  gasoline, paints, plastics, fertilizers
• 2. Inorganic study of non-carbon containing
  chemicals copper sulfate, water

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Branches of Chemistry

• 3. Physical behavior/changes of matter the
  energy changes associated with it.
• 4. Analytical components composition of
  substances

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Branches of Chemistry

• 5. Biochemistry matter processes of living
  organisms medicine, drug research, etc.
• 6. Theoretical chemistry use of math and
  computers to understand chemical principles and
  make future predictions

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What is a chemical?

• Any substance that has a definite composition

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Research

• Basic research knowledge for the sake of
  knowledge. Example migration patterns of
  penguins
• Applied research research to solve a particular
  problem. Example alternative fuel sources
• Technological development production of
  products that improve our daily life. Example
  computers, cars, cell phones
• These 3 areas often overlap