1. Scientific Method

2. What is Chemistry? A science that deals with:
the composition, structure, and properties of substances,
the transformations they undergo
the energies of those transformations

3. 5 Fields of Chemistry Organic: study of substances with Carbon
Inorganic: study of all other substances
Analytical: study of what is in the sample and how much.
Physical: study of the structures of substance.
Biochemistry: study chemical reactions in living systems.

4. Where is Chemistry? Chemistry is EVERYWHERE!
A.) Soaps, Cleansers, Plastics
B.) Ammonia and Nylon; two chemicals which have changed the way we live.

5. How is Chemistry done?
Scientific Method: Chemistry is an experimental science.
A.)Observation and intuition leads to an initial insight. Observation can lead to a question. Einstein called it the intuitive leap. Beyond what can be established with current understanding. A hypothesis is formed from this.
B.) Hypothesis: A tentative explanation that can be validated by experiment.
C.) Experiment: An operation or procedure carried out under controlled conditions to test a hypothesis.
Manipulated variable is the variable that can be changed.
Responding variable is the variable that is observed, it is the dependant factor.

6. Scientific Method
D.) Theory: Well tested explanation for a broad set of observations.
E.) Scientific Law: Concise statement that summarizes many observations and experiments.

7. Let’s Practice…
Give an example for each step in the scientific method :
Observation –
Hypothesis –
Experiment –
Theory –
Scientific Law –