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[DOC File]UNIT 1 Notes: Scientific Notation, Significant Figures ...
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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;
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[DOC File]Chemistry 11 Problem Solving in Chemistry
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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.
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[DOC File]Chapter 1 Chemistry: Matter and Measurement
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rules for significant figures. rounding rules. SI units. Unit conversions (railroad tracks) Kilo-hecto-deca-base unit-deci-centi-milli. Unit 2. matter. mixtures (homogeneous & heterogeneous) compounds. elements. allotropes. physical changes. chemical changes. physical properties. chemical properties. allotropes. Unit 3. protons, electrons ...
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[DOC File]Rules for Using Significant Figures in Mathematical Operations
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Rounding off numbers. If the first digit to be thrown away is greater than or equal to five, then the last digit kept is rounded up by one, otherwise it is unchanged. Applying sig fig rules to addition and subtraction. We always begin by adding as usual and then allowing sig fig theory to guide the rounding …
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[DOC File]REVIEW
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Apply the solubility rules. Use graph of solubility vs. temperature to identify a substance based on solubility at a particular temperature. Use graph to relate the degree of saturation of solutions to temperature. Use graph to make simple calculations about solutions. Describe physical equilibrium: liquid water-water vapor.
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[DOC File]Lesson Plans: Unit 1- Chemistry
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Name: _____ 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
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[DOC File]Rules for Determining Significant Figures in Measurements
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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 ...
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[DOC File]CHEMICAL FOUNDATION
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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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[DOCX File]LESSON PLANS
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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
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4.6: Significant Figures and Rounding - Chemistry LibreTexts
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.
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Rounding rules for chemistry