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P.2
                             Scientific Method:
                           Thinking like a Scientist




General, Organic, and Biological Chemistry     Copyright © 2010 Pearson Education, Inc.

                                                                                          1
The scientific method
  is the process used by
  scientists to explain
  observations in nature.




General, Organic, and Biological Chemistry   Copyright © 2010 Pearson Education, Inc.

                                                                                        2
The scientific method involves
   making observations
   writing a hypothesis
   doing experiments
   proposing a theory




General, Organic, and Biological Chemistry   Copyright © 2010 Pearson Education, Inc.

                                                                                        3
Observations
      facts obtained by observing and measuring
       events in nature
     Hypothesis
      a statement that explains the observations

     Experiments
      procedures that test the hypothesis

     Theory
      a model that describes how the observations
       occur by using experimental results
General, Organic, and Biological Chemistry   Copyright © 2010 Pearson Education, Inc.

                                                                                        4
General, Organic, and Biological Chemistry   Copyright © 2010 Pearson Education, Inc.

                                                                                        5
Observation: The sound from a CD in a CD player
               skips.
Hypothesis 1: The CD player is faulty.
Experiment 1: When I replace the CD with another one,
               the sound from the second CD is OK.
Hypothesis 2: The original CD has a defect.
Experiment 2: When I play the CD in another player, the
               sound still skips.
Theory:        My experimental results indicate that the
               original CD has a defect.
  General, Organic, and Biological Chemistry                                  Copyright © 2010 Pearson Education, Inc.

           Picture from Creative Commons at http://www.flickr.com/photos/uncle-leo/4959220737/                           6

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P.2 scientific method_thinking_like_a_scientist

  • 1. P.2 Scientific Method: Thinking like a Scientist General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc. 1
  • 2. The scientific method is the process used by scientists to explain observations in nature. General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc. 2
  • 3. The scientific method involves  making observations  writing a hypothesis  doing experiments  proposing a theory General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc. 3
  • 4. Observations  facts obtained by observing and measuring events in nature Hypothesis  a statement that explains the observations Experiments  procedures that test the hypothesis Theory  a model that describes how the observations occur by using experimental results General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc. 4
  • 5. General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc. 5
  • 6. Observation: The sound from a CD in a CD player skips. Hypothesis 1: The CD player is faulty. Experiment 1: When I replace the CD with another one, the sound from the second CD is OK. Hypothesis 2: The original CD has a defect. Experiment 2: When I play the CD in another player, the sound still skips. Theory: My experimental results indicate that the original CD has a defect. General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc. Picture from Creative Commons at http://www.flickr.com/photos/uncle-leo/4959220737/ 6