All Chapters Video 0.5 Significant Figures and Percent Error Master Lesson OutlineMaster Quiz Outline Question? Ask Dr. Mike! Lesson Summary Significant Figures 1. Zeroes between nonzero digits are always significant: 1005 kg (four sig-figs); 7.03 cm (three sig-figs). 2. Zeroes at the start of a number are never significant: 0.02 g (one sig-fig); 0.0026 cm (two sig-figs). 3. Zeroes at the end of a number are significant only if the zeroes are AFTER a decimal point: 0.0200 g (three sig-figs); 3.0 cm (two sig-figs). Precision vs. Accuracy Percent Error Calculations Lesson 0.5 Significant Figures and Percent Error 0.1 Atoms, Ions, and Molecules 0.1 Quiz Video Solution 0.2 Naming Ionic Compounds 0.2 Quiz Video Solution Pt. 1 0.2 Quiz Video Solution Pt. 2 0.3 Naming Molecular Compounds and Acids 0.3 Quiz Video Solution 0.4 Metric Units and Dimensional Analysis 0.4 Quiz Video Solution Pt. 1 0.4 Quiz Video Solution Pt. 2 0.4 Quiz Video Solution Pt. 3 0.5 Significant Figures and Percent Error 0.5 Quiz Video Solution 0.6 Lab Safety 0.7 Weights, Measures, and pH 0.8 Beer-Lambert Law Instructor Dr. Mike Christiansen Dr. Christiansen is a chemistry professor at Utah State University and has a PhD in organic chemistry. He's been teaching students chemistry for nearly 12 years.