1.1 Chemistry: The Central Science

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1.9 Measurement and Significant Figures Some numbers are exact and effectively have an unlimited number of significant figures. • A class might have exactly 32 students (not 31.9, 32.0, or 32.1). • 1 foot is defined to have exactly 12 inches.
<strong>1.1</strong>0 Scientific Notation • Scientific notation—A number expressed as the product of a number between 1 and 10, times 10 raised to a power. 215 = 2.15 × 100 = 2.15 × (10 × 10) = 2.15 × 10 2 • <strong>The</strong> exponent on the 10 tells how many places the decimal point was moved to position it just after the first digit
Page 1 and 2: 1.1 Chemistry: The Central Science
Page 3 and 4: 1.2 States of Matter Many substance
Page 5 and 6: 1.3 Classification of Matter Compon
Page 7 and 8: 1.4 Chemical Elements and Symbols
Page 9 and 10: 1.4 Chemical Elements and Symbols
Page 11 and 12: 1.6 Chemical Reactions: An Example
Page 13 and 14: 1.7 Physical Quantities Scientists
Page 15 and 16: 1.7 Physical Quantities
Page 17 and 18: 1.8 Measuring Mass, Length, and Vol
Page 19: 1.9 Measurement and Significant Fig
Page 23 and 24: 1.10 Scientific Notation • To con
Page 25 and 26: 1.12 Problem Solving: Unit Conversi
Page 27 and 28: 1.12 Problem Solving: Unit Conversi
Page 29 and 30: 1.13 Temperature, Heat, and Energy
Page 31 and 32: 1.13 Temperature, Heat, and Energy

1.1 Chemistry: The Central Science

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