Chapter 1 Introduction To Chemistry

Document Sample
Chapter 1 Introduction To Chemistry Powered By Docstoc
					Chapter 1: Introduction To
Section 1.1: Chemistry

• What Is Chemistry?
• “Chemistry is the study of the composition of
  matter-the stuff things are made of-and the changes
  that matter undergoes.”
• The Five Major Areas of Study
• 1: Organic Chemistry- the study of essentially all
  substances containing carbon.
• 2: Inorganic Chemistry- Substances that do not
  contain carbon.
• 3: Analytical Chemistry- Composition of substances
• 4: Physical Chemistry- theories and experiments that
  describe the behavior of chemicals.
• 5: Biochemistry- the study of the chemistry of living
Section1.2:Chemistry Far And

  • Energy
  • Chemistry is creating new energy conservation
  • Energy-efficient fuels.
  • Sodium lamps used to light up the roads.

  • Plants capture the sun’s energy to create food using
Section 1.2:Chemistry Far and

  • Medicine And Biotechnology
  • Scientists have the ability to determine the spatial
    arrangement of atoms in complex biological
    molecules such as proteins. Substances such as
    vitamin C, penicillin, and aspirin are created using
Section1.2:Chemistry Far And

  • Agriculture
  • Chemistry is used to develop hardier and more
    productive plants.
Section1.2:Chemistry Far And

   • The Environment
   • Chemists work with Environmentalists to solve
     problems in the environment with pollutants.
   • Every year the amount of Carbon Dioxide (CO2) in
     the atmosphere increases and global warming gets
   • The carbon dioxide acts as an isolator of the earth,
     light rays travel into the atmosphere, reflect back
     off the earth but the carbon dioxide keeps red light
     in, which is also heat energy.
Scientific Method

  •   Problem to Investigate
  •   Observations
  •   Hypothesis-educated guess
  •   Test Hypothesis
  •   Theory-most ideas in science
  •   Test Theory
  •   Scientific Law-mathematical proof
Section1.3:Scientific Method

  • Scientific Method- one logical approach to the
    solution of scientific problems.

                             Scientific Method

          Observations   Hypothesis    Experiments   Theory
Section1.3:Scientific Method

  • Observation-Using you senses to obtain information
  • Hypothesis-proposed explanation or reason for
    what is observed.
  • Experiment-a means to test a hypothesis.
  • Theory- a broad and extensive tested explanation of
    why experiments give certain results.
                       Scientific Method

    Observations   Hypothesis    Experiments   Theory