A quantitative observation is called a measurement. A measurement always consist of two parts: a number and a unit. Both parts are necessary to make the measure measurement meaningful.
Sections 2.1 Scientific Notation 2.2 Units 2.3 Measurements of Length, Volume, and Mass 2.4 Uncertainty in Measurement 2.5 Significant Figures 2.6 Problem Solving and Dimensional Analysis 2.7 Temperature Conversions: An Approach to Problem Solving 2.8 Density |
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- 11.1 Rutherford's Atom
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- 11.4 The Energy Levels of Hydrogen
- 11.5 The Bohr Model of the Atom
- 11.6 The Wave Mechanical Model of the Atom
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- 12.1 Types of Chemical Bonds
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