1. Chapter 1. The Science of Chemistry Science: The study in which humans attempt to or- ganize and explain, in a systematic and log- ical manner, knowledge about themselves and their surroundings. Textbook The observation, identification, description, experimental investigation, and theoretical explanation of natural phenomena. Dictionary

2. Chapter 1. The Science of Chemistry Chemistry is the scientific discipline con- cerned with the characteristics, compo- sition, and transformations of matter. Matter is anything that has mass and oc- cupies space.

4. Scientific Method How Scientists Study/Discover Things 1.Identify problem. Break it down, plan research & experiments 2.Collect data. 3.Analyze, organize, summarize data. 4.Suggest probable explanations. Form hypotheses 5.Test hypotheses by further research.

5. Some Definitions An experiment is a well-defined, controlled procedure for obtaining information about a system under study. Data is information. Qualitative data is non-numerical or descrip- tive information, e.g. color, shape, etc. Quantitative data is numerical information obtained from measurements.

6. Some Definitions Scientific research leads to: Facts, valid observations (data) about the system being studied. Scientific Laws, generalizations that sum- marize facts. They're often mathematical, and not explanatory. They’re also called Natural Laws.

7. Some Definitions Scientific research leads to: Hypotheses, explanations of phenomena that can be tested by experiment. Hy- potheses are initial educated guesses. They may precede the first experiments. Theories, hypotheses that have been thor- ougly tested and validated over time. Theories generally apply to “big picture” phenomena.