MATH Percent Sig Figs - Contents
- Page 1Measurement - ReviewIntroduction to measurement using a graduated scale and significant figures
- 6 marksPage 2QuestionSix examples of rounding a giving number to the required number of significant figures
- Page 3Significant figures - ReviewGuidelines for the appropriate number of significant figures in numbers that result from a calculation using measurements
- 6 marksPage 4QuestionExample of reading a graduated scale to the appropriate number of significant figures and choosing the appropriate number of significant figures to be used in an average of measurements
- Page 5Percent 1 - ReviewIntroduction to the relationship between a fraction, its equivalent decimal and percentage
- 8 marksPage 6QuestionInterconverting decimal, percentages and fractions (3 examples, 6 answers)
- Page 7Percent 2 - ReviewCalculating percentage by mass, importance of using the same units when calculating percentage, percentages adding to 100%
- 5 marksPage 8ProblemCalculating a percentage by mass, changing units, use appropriate number of significant figures in a chemical context
- Page 9Percent 3 - ReviewIllustrating how the mass of A can be calculated from mass % A and the total mass. This is done with an emphasis on the mathematical operations appropriate to rearranging equations to solve for an unknown
- 7 marksPage 10ProblemsThree examples of using percentage by mass and the total mass to calculate the mass of a component. All of these are done in a chemical context,
- 2 marksPage 11Using percentages in a qualitative way
- 2 marksPage 12Calculating the mass given the mass percentage
- Page 13Percent 4 - ReviewUsing the percentage equation with rearrangement to calculate the total mass given the mass % and the mass of a component
- 10 marksPage 14ProblemCalculating total mass of urea given mass of nitrogen and mass % of nitrogen