01an Introduction To Chemistry
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What is a Science?
An Introduction to Chemistry
The observation, identification, description, experimental investigation, and theoretical explanation of natural phenomena.
observe describe
identify
Natural Phenomena experimentally investigate
The science of the composition, structure, properties and reactions of matter, especially of atomic and molecular systems.
theoretically explain
composition
structure
The Scientific Method
Matter properties
Chemistry
reactions
1
• Hypothesis: A trial explanation of certain facts that provides a basis for further experimentation.
• Theory: Wellestablished hypothesis. An explanation of the general principles of certain phenomena with considerable evidence or facts to support it.
Law: Statement of natural phenomena to which no exceptions are known under the given conditions. A law is not an explanation.
1. Collect facts or data that are relevant to the problem or question at hand. This is usually done by experimentation. 2. Analyze the data to find trends (regularities). 3. Formulate a hypothesis that will account for the data and that can be tested by further experimentation.
4. Plan and do additional experiments to test the hypothesis. 5. Modify the hypothesis to ensure compatibility with the experimental data.
EXPLANATIONS
Hypothesis
Theory
Tentative Explanation of Certain Facts
Explanation of the General Principles of Certain Phenomena
Provides a Basis for Further Experimentation
Considerable Evidence or Facts Support It
Law
Simple Statement of Natural Phenomena
No Exceptions Under the Given Conditions
2
An Introduction to Chemistry
The observation, identification, description, experimental investigation, and theoretical explanation of natural phenomena.
observe describe
identify
Natural Phenomena experimentally investigate
The science of the composition, structure, properties and reactions of matter, especially of atomic and molecular systems.
theoretically explain
composition
structure
The Scientific Method
Matter properties
Chemistry
reactions
1
• Hypothesis: A trial explanation of certain facts that provides a basis for further experimentation.
• Theory: Wellestablished hypothesis. An explanation of the general principles of certain phenomena with considerable evidence or facts to support it.
Law: Statement of natural phenomena to which no exceptions are known under the given conditions. A law is not an explanation.
1. Collect facts or data that are relevant to the problem or question at hand. This is usually done by experimentation. 2. Analyze the data to find trends (regularities). 3. Formulate a hypothesis that will account for the data and that can be tested by further experimentation.
4. Plan and do additional experiments to test the hypothesis. 5. Modify the hypothesis to ensure compatibility with the experimental data.
EXPLANATIONS
Hypothesis
Theory
Tentative Explanation of Certain Facts
Explanation of the General Principles of Certain Phenomena
Provides a Basis for Further Experimentation
Considerable Evidence or Facts Support It
Law
Simple Statement of Natural Phenomena
No Exceptions Under the Given Conditions
2
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