Working with Significant Figures Exact Numbers Some numbers are exact, either because: We count them (there are 14 elephants) By definition (1 inch = 2.54 cm) These numbers…

Unit One Notes: Significant Figures Unit One Notes: Significant Figures 2.3 A. What are Significant Figures? The number of all certain digits in a measurement plus one estimated…

Significant Figures Significant Figures Not all numbers matter⦠Significant Figures Definition: Digits of a number that are relevant when doing mathematical calculation.…

Instrumental Analysis Instructors: Upali Siriwardane, CTH 311, Phone: 257-4941) Frank Ji, CTH 343/IfM 218, Phone: 257-4066/5125 Dale L. Snow, Office: CTH 331,Phone: 257-4403…

CHAPTER 1 Chemistry: The Study of Change   CHEMISTRY UNITS Table 1.2 SI Base Units Base Quantity Name of Unit Symbol Length meter m Mass kilogram kg Time second s Temperature…

Warm Up 9 9/12/11 How many significant figures are in 80900? Warms up will be checked Wed. Test Curve was 5 points Guaranteeing Partial Credit Organize what the problem gives…

Introduction to Significant Figures & Scientific Notation Significant Figures Scientist use _______________ to determine how _______________ a measurement is. Significant…

Chemistry by the numbers Units of Measurement – The Metric System Length: Mass: Volume: Temperature: Pressure: ________ meter ________ gram ________ liter _____ Celsius…

Scientific Measurement Measurements and their Uncertainty Dr. Yager Chapter 3.1 Objectives Convert measurement to scientific notation Distinguish between accuracy, precision,…

SIGNIFICANT FIGURES ACCURACY VS. PRECISION In labs, we are concerned by how “correct” our measurements are They can be accurate and precise Accurate: How close a measured…