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Scientific Notation Accuracy & Precision Lab

Scientific Notation Accuracy & Precision Lab. GT Chem 8/28/14. Drill. Multiply (3.5 x 10 3 )(4.0 x 10 5 ) (8.2 x 10 13 )(1.0 x 10 -5 ) Divide (8.2 x 10 13 )/(1.0 x 10 -5 ) (1.5 x 10 3 )/(3.0 x 10 6 ). And we get… 1.4 x 10 9 8.2 x 10 8 8.2 x 10 18 5.0 x 10 -4.

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Scientific Notation Accuracy & Precision Lab

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  1. Scientific NotationAccuracy & Precision Lab GT Chem 8/28/14

  2. Drill • Multiply • (3.5 x 103)(4.0 x 105) • (8.2 x 1013)(1.0 x 10-5) • Divide • (8.2 x 1013)/(1.0 x 10-5) • (1.5 x 103)/(3.0 x 106) • And we get… • 1.4 x 109 • 8.2 x 108 • 8.2 x 1018 • 5.0 x 10-4

  3. Objectives • IWBAT • Practice with scientific notation • Define precision and accuracy • Perform measurements with precision and accuracy.

  4. HW Review • 5.3 x 108 • 4.0 x 1014 • 2.0 x 104 • 2.0 x 101 • 1.5 x 103 • 4 x 108 • 6.2 x 10-6 • 3.4 x 10-5 • 4.9 x 101 • 5 x103

  5. Scientific Method Qs? • Any?

  6. Precision vs Accuracy • I will draw a target and discuss the diagram.

  7. Precision & Accuracy • What is precision? • Precision is how close a series of measurements are to each other. • What is accuracy? • Accuracy is how close a measurement is to a “standard”. For example, the center of a bullseye.

  8. Sports Examples http://blog.affinitymed.com/wp-content/uploads/2009/06/6-7-09-kobe-shooting-in-the-paint-small.jpg http://i.cdn.turner.com/si/multimedia/photo_gallery/0808/oly.phelps.sequence/images/opgm-37117-mid.jpg

  9. Accuracy and Precision Lab • You will work in the same pairs as Monday. • Now, go into the lab and follow the directions to gather data for Trial 1 of the Accuracy and Precision Lab. • All done? Come back to seats and do the calculations for Trial 1. • Record your percent error on the board. • If time, return to lab to try again.

  10. Closure • How accurately can one measure using a ruler? Using a graduated cylinder? • Is there a formal way to represent this concept?

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