'Nonzero digits' presentation slideshows

Chapter 2 - Measurement

1.02k views • 87 slides

Chapter 2 Measurement and Problem Solving

Chapter 2 Measurement and Problem Solving. What Is a Measurement?. Quantitative observation. Comparison to an agreed upon standard. Every measurement has a number and a unit. A Measurement. The unit tells you to what standard you are comparing your object. The number tells you:

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Chapter 1

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Significant Digits

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LABORATORY SAFETY

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Chapter 2. Measurement

Chapter 2. Measurement. Chemistry is a physical science , one that depends heavily on measurement to obtain quantitative data . Measurement is the determination of dimensions, capacity, quantity, or extent of something. Precision, Accuracy, Error. Precision, Accuracy, Error.

523 views • 28 slides

Chemistry: An Introduction to Matter

Chemistry: An Introduction to Matter. Chapter 1 Dr. Daniel E. Autrey August 22 nd , 2005 CHEM 140. Chemistry is the study of matter and the changes it undergoes. Matter is anything that occupies space and has mass.

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Using and Expressing Measurements

Using and Expressing Measurements . Scientific Measurements Chapter 3 Section 1. Vocabulary. Measurement A quantitative description that includes both a number and a unit. Scientific notation

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Chapter 1 : The Science of Physics

Chapter 1 : The Science of Physics. 1-1 Areas Within Physics. The Scientific Method. Make observations and collect data. This step leads to a question Formulate and test a hypothesis by experiments. Hypotheses must be testable Interpret results and revise the hypothesis as necessary

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Chemistry SOL Review by Anne Mooring (Jamestown High School, Williamsburg VA, 2006)

Chemistry SOL Review by Anne Mooring (Jamestown High School, Williamsburg VA, 2006). Part 1: Scientific Investigations Lab Equipment Scientific notation Significant figures The Metric System Density measurement and calculations Lab Methods Accuracy and precision Error Analysis

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Science Investigations

Measures of Science. Science Investigations. Scientific Notation. Why do we use it? Expresses decimal places as powers of 10 Written in the form M x 10 n M (mantissa): numerical part of the value written as a number between 1 and 9 Only write one digit to the left of the decimal point

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Measurement

Measurement. Scientific Notation and the Metric System. Reliability in Measurement . Precision same results again and again under the same conditions Accuracy Close to the accepted value Accepted Value = the correct answer. The Metric System.

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iChem Math: Significant Figures

iChem Math: Significant Figures. Significant Figures. Measure of precision Two issues: how to create sig figs in the lab how to interpret sig figs when already written. . Creating Sig Figs in the Lab. Record all digits known with certainty + 1 estimated digit.

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Scientific Measurement Ch. 3

Scientific 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

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Significant Figures

Significant Figures. This module for out-of-class study only. This is not intended for classroom discussion. Significant Figures. Engineers often are doing calculations with numbers based on measurements. Depending on the technique used, the precision of the measurements can vary greatly.

379 views • 13 slides

The Scientific Method

The Scientific Method. Using and Expressing Measurements. Scientific notation is written as a number between 1 and 10 multiplied by 10 raised to a power. . Accuracy, Precision, and Error. Accuracy is how close a measurement is to the actual or true value of whatever is measured. .

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Significant Figures

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Sig Figs

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1.2 Measurements in Experiments

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Significant Digits

Significant Digits. How do you determine where to round off your answers?. Counting Significant Digits. 1. A nonzero digit is always significant. 2. Zeros between nonzero digits are always significant. 3. Zeros at the beginning of a number are never significant.

358 views • 8 slides