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CHEM 1151

CHEM 1151. GENERAL CHEMISTRY BILIN PAULA TSAI. CHEMISTRY. THE CENTRAL SCIENCE Explains all aspects of daily life A QUALITATIVE SCIENCE Make and record observations A QUANTITATIVE SCIENCE How much, how many?. CHEMISTRY. AN EXPERIMENTAL SCIENCE Observe and test; laboratory requirement

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CHEM 1151

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  1. CHEM 1151 GENERAL CHEMISTRY BILIN PAULA TSAI

  2. CHEMISTRY • THE CENTRAL SCIENCE • Explains all aspects of daily life • A QUALITATIVE SCIENCE • Make and record observations • A QUANTITATIVE SCIENCE • How much, how many?

  3. CHEMISTRY • AN EXPERIMENTAL SCIENCE • Observe and test; laboratory requirement • INTELLECTUAL PURSUIT • Scientific method (observe, hypothesize, test, theorize, predict, retest and refine, develop law) • METHOD OF INQUIRY • To probe the world around us and to enable advances in our quality of life

  4. CHEMISTRY APPLIED TO ALL ASPECTS OF LIFE • Health care including diagnostics, medicine and prevention • Materials for buildings, clothing, roads • Transportation fuel • Agriculture and food • Communication, electronics and computers

  5. CHEMISTRY • Study of Matter • Matter is characterized by mass and volume • Matter has physical and chemical properties • There are three states of matter: Gas, Liquid, SolidAgriculture and food • Study of how matter changes: Chemical Reactions

  6. CHEMISTRY • Physical properties • Color, boiling point, freezing point, solubility, density, hardness, conductivity, odor • Physical changes • Change in form of matter without changing its chemical identity. E.g. boiling

  7. CHEMISTRY • Chemical properties • Reactivity, change in composition, rearrangement of atoms to give new chemical species • Chemical changes (Reactions)

  8. QUANTITATIVE SCIENCE:NUMBER and UNIT • How good or precise is the number? • Significant Figures (all certain + one uncertain digit; pp. 19-20) • Rules for addition/subtraction and multiplication/division (p. 20-21) • Rules for Rounding (p.21-22) • Does is make sense? (Ballpark Check) • Develop sense of order of magnitude • How can it be expressed? • Scientific Notation (Appen. A)

  9. Units • Fundamental SI Units (Table 1.3) • Derived SI Units • prefixes (Table 1.4) • combining SI units; I.e. volume (length cubed), density (mass/volume) ( Table 1.5) • Dimensional Analysis or Unit Factor Method (conversion to other units) • SI and English (Back End Page)

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