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Ch.1 Matter and MeasurementsWorksheetSee all chapters
All Chapters
Ch.1 Matter and Measurements
Ch.2 Atoms and the Periodic Table
Ch.3 Ionic Compounds
Ch.4 Molecular Compounds
Ch.5 Classification & Balancing of Chemical Reactions
Ch.6 Chemical Reactions & Quantities
Ch.7 Energy, Rate and Equilibrium
Ch.8 Gases, Liquids and Solids
Ch.9 Solutions
Ch.10 Acids and Bases
Ch.11 Nuclear Chemistry
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
What is Chemistry?
The Scientific Method
Classification of Matter
States of Matter
Physical & Chemical Changes
Chemical Properties
Physical Properties
Intensive vs. Extensive Properties
Temperature (Simplified)
Scientific Notation
SI Units (Simplified)
Metric Prefixes
Significant Figures (Simplified)
Significant Figures: Precision in Measurements
Significant Figures: In Calculations
Conversion Factors (Simplified)
Dimensional Analysis
Specific Gravity
Density of Geometric Objects
Density of Non-Geometric Objects

Significant Figures are often involved in mathematical calculations. 

Significant Figures In Calculations

Concept #1: Significant Figure Rules with Multiplication and Division.

Concept #2: Significant Figure Rules with Addition and Subtraction.

Concept #3: Significant Figure Rules with Mixed Operations.

Practice: Perform the following calculation to the right number of sig figs:
[(1.7 × 106) ÷ (2.63 × 105)] + 6.96

Practice: Perform the following mathematical operations and express the result to the correct number of significant figures.
(6.404 × 2.91) / (18.7 – 17.1)

Practice: What answer should be reported, with the correct number of significant figures, for the following calculation?
[(42.00 − 40.914) ⋅ (25.739 − 25.729)] / [(11.50⋅1.001) + (0.00710 ⋅ 700.)]