Using Scientific Measurements. 2.3. Accuracy vs. Precision. Accuracy – the closeness of a measurement to the correct or accepted value of quantity measured. Precision – the closeness of a set of measurements of the same quantity made in the same way 4 darts clustered together = acc or pre?.

ByScientific Measurements. BIG NUMBERS. Scientists often work with very large numbers. National debt = $5,653,000,000,000 Bill Gates' net worth = $75,030,000,000 Distance to Alpha Centauri = 40,120,000,000,000,000 m Distance to Andromeda Galaxy = 21,800,000,000,000,000,000,000 g

ByCH. 2 - MEASUREMENT. III. Using Measurements (p. 44 - 57). A. Accuracy vs. Precision. Accuracy - how close a measurement is to the accepted value Precision - how close a series of measurements are to each other. ACCURATE = CORRECT PRECISE = CONSISTENT. Let’s use a golf analogy.

ByMeasurement. Scientific measurement. Number vs. Quantity. Quantity - number + unit. UNITS MATTER!!. Courtesy Christy Johannesson www.nisd.net/communicationsarts/pages/chem. Types of measurement. Quantitative - use numbers to describe Qualitative - use description without numbers 4 feet

ByMeasurements & Calculations. Chapter 2. Section 2.1. Objective: show how very large or very small numbers can be expressed as the product of a number between 1 and 10 AND a power of 10. Scientific Notation. Scientific Numbers. In science, we often encounter very large and very

BySignificant Figures. What is a significant figure?. The precision of measurements are indicated based on the number of digits reported. Significant figures are the digits that are reported Approximate: weight, height—anything MEASURED; no measurement is perfect.

ByThe Metric System. Seo Physics. What is the Metric System?. Aka. S.I. System (International Standards) A tool for measurement of different values Because it is a system, it is very consistent

ByUnits, Measurement, Significant Figures & Conversions. Physics. SI Units. The SI Units we will be concerned with mostly are: Quantity Unit Length/Distance Time Mass Temperature . meter [m] second [s] kilogram [kg] Kelvin [K]. SI Units.

ByUnit 1- Scientific Measurement/ Matter and Energy. Let’s get our minds in chemistry mode! Find the pattern. https://www.youtube.com/watch?v=vJG698U2Mvo. Find the pattern…. _ _ T T F F S S E _ _ E T T F F S S E _ _. Last one….

ByU nit 2 :. I ntro to C hem & M easurements. What is today’s objective?. In this map, gray areas denote metric territory. English units are used primarily in red zones. Title of Notes: Metric Measurement . MEASUREMENTS Science is based on measurements All measurements have: Magnitude

ByAccuracy & Precision. Two important points in measurement. Accuracy and Precision At the conclusion of our time together, you should be able to:. Explain the difference between the accuracy and precision Give examples of accuracy and precision. Accuracy.

ByChem. 31 – 9/6 Lecture. Announcements I. Adding If you received an add slip, turn it into the office soon (so I know status of lab sections) Turn in today Corrected diagnostic quiz Quiz 1 – Today (after announcements)

ByChemistry Jeopardy. A fun way to review Prefixes, Sig Figs and Conversions . Jeopardy. Final Jeopardy. The number of kilometers/hour in 356 meters/second. What is 1281.6 km/hr?. DAILY DOUBLE !. DAILY DOUBLE !. 234. What is three sig figs?. 1300. What is two sig figs?. 0.001340.

BySignificant Figures Density % Error. Significant Figures. The number of digits reported in a measurement. All the known digits plus one estimated value. The number of significant figures possible depends upon the piece of equipment used to take the measurement. Significant Figures.

ByThe Scientific Method: A logical series of steps scientists follow when solving problems. Orange Grove Experiment. Hypothesis: If we add fertilizer to the soil, then we will grow large oranges. Orange Grove. Purpose: Discover how to grow the biggest oranges. Example.

ByPresenting Numerical Values from an Investigation. Version 080104. Outline. Uncertainty Propagation of Uncertainty Least Squares Fit to Lines. Online References. www.av8n.com/physics/uncertainty.htm mathworld.wolfram.com/LeastSquaresFitting.html www.physics.csulb.edu/151lab/exp4/lsf.html.

ByMEASUREMENT AND SIGNIFICANT FIGURES. You pour the same volume of water into each of the graduated cylinders below.

ByScientific Measurement Ch. 3. Why are precise measurements and calculations essential to the study of chemistry?. (3.1) Measurements. Quantity that has a number and unit. Accuracy and Precision. How close a measurement comes to the actual value of what is being measured

BySignificant Figures (Sig Figs). Quantity includes all known digits plus one estimated digit = last digit of # Indicates precision 500 vs 500.01. Rule 1: All digits recorded from a lab measurement are called significant figures. Rule 2: All non-zero digits are considered significant.

ByAccuracy vs. Precision. Accuracy - how close a measurement is to the accepted value Precision - how close a series of measurements are to each other. ACCURATE = Correct PRECISE = Consistent. Courtesy Christy Johannesson www.nisd.net/communicationsarts/pages/chem. Significant Figures.

ByView Sig figs PowerPoint (PPT) presentations online in SlideServe. SlideServe has a very huge collection of Sig figs PowerPoint presentations. You can view or download Sig figs presentations for your school assignment or business presentation. Browse for the presentations on every topic that you want.