PPT-How many significant figures are there in each of the following measurements?

472006 s 00003 km 400 mL 3200 mg How many significant figures are there in each of the following measurements 472006 s 6 significant figures 00003 km 1 significant figure 400 . What’s the Diff?. Accuracy. Accuracy: . How . closely a measurement matches true or actual values. To . be accurate only requires the true value (the . bulls eye. ) and one measurement (one arrow to hit . Every measurement has UNITS.. Every measurement has UNCERTAINTY.. 2. Accuracy and Precision in . Measurements. Accuracy: how close a measurement is to the accepted value.. Precision: how close a series of measurements are to one another or how far out a measurement is taken.. &. Scientific Notation. Significant Figures. Scientist use significant figures to determine how precise a measurement is. Significant digits in a measurement include all of the known digits plus one estimated digit. Golibjon. Berdiyorov. 2. Golibjon. Berdiyorov. , Room 148 Physics Building. Phone: . 860-3869/2283. e-mail: . golib@kfupm.edu.sa. www.cmt.ua.ac.be/golib/PHYS101. Syllabus and teaching strategy. Using Significant Figures. S8CS3: . Students will have the computation and estimation skills necessary for analyzing data and following scientific explanations.. S8CS3d:.  Decide what degree of precision is adequate, and round off appropriately.. References :. Basic Principles and Calculations in Chemical. Engineering, 7 edition,. . . David. M. . Himmerblau. and James B. Riggs.. ปริมาณสัมพันธ์สำหรับงานอุตสาหกรรม เล่ม . Scientific Measurements. SI Units. Significant Figures. SI Units. Measurement system universal to scientists.. Measurement standards (. base vs. derived. ). Base unit—. Quantity we can MEASURE. Derived unit--. Measurements and Their Uncertainty. 3.1. 3.1. Measurements are fundamental to the experimental sciences. For that reason, it is important to be able to make measurements, and to use them correctly when calculating answers.. We make. . QUALITATIVE. . observations of reactions — changes in color and physical state.. We also make. . QUANTITATIVE MEASUREMENTS. , which involve . numbers. .. Use. . SI units . — based on the metric system. We make. . QUALITATIVE. . observations of reactions — changes in color and physical state.. We also make. . QUANTITATIVE MEASUREMENTS. , which involve . numbers. .. Use. . SI units . — based on the metric system. Pacific/Atlantic Method636/584-6688GeneraltutoringeastcentraleduClick to advance slidesIn wordsRule 1 All non-zero digits are significantRule 2 Zeros in front of a number are notsignificantRule 3 Z 780.0 0.0000890. . 91.11. . . 0000. 80000000. Solve the following using correct sig figs:. (89.7 . + . 876) • 0.034 . = ?. 9.0 . +. . 7.25 = ?. 91.0 . •. . 12 . •. . 2.00 = . ?. You are asked to express the number . Length is measured by observing the marked lines at . the end . of a ruler. The last digit in your measurement is an . estimate, obtained by . visually dividing the space between the marked lines.. Learning Goal . Mrs. Charniauskaya. Metric System. Scientists all over the world use the same system of units so they can communicate information clearly . This system is called . Système. . Internationale. . d’Unités.