chapter 1: introduction to chemistry. i. chemistry a. definition: study of composition of matter and...
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Chapter 1: Introduction to
Chemistry
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I. Chemistry• A. Definition: study of composition of matter
and changes to it
• B. Matter: material making up everything
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II. Types of Chemistry• A. Organic: all substances with carbon (sugars,
alcohols, proteins)
• B. Inorganic: any substance without carbon, mostly metal reactions
Aerial View of Amazon Rainforest Aerial View of Grand Canyon
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• C. Analytic: composition of substances
• D. Physical: behavior of chemicals, ex. The stretching of nylon
• E. Biochemistry: chemical interactions of living organisms, ex. respiration
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III. Scientific Method
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IV. Parts of an Experiment• A. Independent variable: the factor in an
experiment that is changed
• B. Dependent variable: any factors that are changing in response to the independent variable
• C. Controlled variable: any factors that are held constant during the experiment
Example: Plant Growth in response to amount of water
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V. Theory vs. Law• A. Theory: Explanation of an event
• B. Based on experimentally proven hypothesis
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• C. Law: A very common observation
• D. Explains what happens, NOT WHY