Rounding rules in chemistry
[DOC File]CHEMICAL FOUNDATION
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Partner Work – Section II: Rounding Rules with Significant Figures. Homework. Complete Section I and Section II. Read/Review Significant Figures Section and Practice Problems in Textbook. Holt’s Modern Chemistry pgs. 46-48. Addison’s Chemistry pgs. 56-58. Significant Figure .ppt. Significant Figures Practice Wkst. SC.912.N.1.1. T. U. E. S ...
[DOC File]Unit Name
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UNIT 1 NOTES: Scientific Notation, Significant Figures & Rounding, Metric Units (Chapter 3 in your Chemistry Text) Scientific Notation. When scientists talk about very large or very small numbers, it gets difficult to name the number (e.g. a one followed by 15 zeros is quadrillion or quintillion?) and it’s painstaking to write them down.
[DOC File]UNIT 1 Notes: Scientific Notation, Significant Figures ...
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Rules for Rounding Off. When doing calculations from measured numbers using a calculator, you get answers that give several digits. However, your answer cannot be more precise than your actual measurements. For example if you are calculating the area of a piece of cloth that measures 6.3 m by 3.4 m, the answer is 21.42 m2.
Significant figures and rounding
Rules for Rounding Numbers. If the digit to the . immediate right. of the last significant figure is < 5, do not change. the last significant figure. > 5, round up. the last significant figure. = 5, and is . followed by. a . nonzero digit, round up. the last significant figure. = 5, and …
[DOCX File]LESSON PLANS - Mrs. John Chemistry
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SI Rounding Rules. Modern Chemistry: 2. Chemistry: 2 Atomic Structure (3.5 Weeks) (3 weeks) Molar Mass Foundations of atomic theory - Dalton’s atomic theory - modern atomic theory - Atomic Structure - Atomic number and mass - Isotopes - Relative atomic mass - The mole - Avogadro’s Number - Balancing Nuclear equations. Nuclear Force
[DOC File]Chemistry - North Thurston Public Schools
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Practice Problems for Significant Figures . RULE -1: If the decimal is . Present: Find the first non zero on the left, then count all digits to the . RIGHT. If the decimal is . Absent: Find the first non zero on the right, then count all digits to the . LEFT. RULE-2: Every digit in scientific notation is Significant.
[DOC File]Significant Figures Practice Worksheet
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B. Rules for Counting Sig Figs. Rule #1: Rule #2: Rule #3: Rule #4: You must memorize the rules and learn to use them or lose points throughout the year! Example 1L.2 State the number of significant figures in the following set of measurements: 1.2304 mm. 1.23400 cm. 1.200 x 105 mL. 0.0230 m. 0.02 cm. 8 ounces = 1 cup. 30 cars in the parking lot
[DOC File]Rules for Determining Significant Figures in Measurements
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Chemistry Name: Worksheet: Significant figures Date: A. Read pp. 56 - 62 and answer the following questions: 1. _____ (T/F) Significant figures include all the digits that can be known precisely and the last digit which must be estimated. 2. _____ (T/F) Significant figures are an indication of the precision of a measurement. 3.
[DOC File]Rules for Using Significant Figures in Mathematical Operations
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Rounding Rules: Round at the end of all calculations. Look at the significant figure one place beyond your desired number of significant figures if >5 round up;
[DOC File]Rules for Recognizing Significant Figures
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Rules for rounding. When making calculations with measured values, the answer will need to be rounded to the correct number of significant figures according to the following rules. Round down whenever the digit following the last significant figure is a 0,1,2,3, or 4. For example, 30.24 becomes 30.2.
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