Public learning track
Ratios, Percentages, and Empirical Formulae
10th Grade · Science · UK GCSE
7 lessons
Goal
Apply ratios, percentages, and arithmetic computations to determine percentage composition, empirical formulae, percentage yield, and atom economy.
Featured Diagrams
Calculating Percentage by Mass of an Element in a Compound
7 lessons
0 of 7 done
- 1Calculating Percentage by Mass of an Element in a CompoundUp nextStart
- 2Determining Empirical Formula from Reacting MassesPremiumNot started yet
- 3Determining Empirical Formula from Percentage CompositionNot started yet
- 4Converting Empirical Formula to Molecular Formula Using Relative Molecular MassNot started yet
- 5Calculating Percentage Yield from Experimental and Theoretical MassesNot started yet
- 6Calculating Atom Economy of Chemical ReactionsNot started yet
- 7Deducing Stoichiometric Coefficients from Reacting MassesNot started yet
Standards Covered
- UK-GCSE-SCIENCE-CHEM-CA-04General Certificate of Secondary Education (GCSE) · Science · Year 11 (GCSE) · Grade 10Use of mathematics
- UK-GCSE-SCIENCE-CHEM-CA-04-01General Certificate of Secondary Education (GCSE) · Science · Year 11 (GCSE) · Grade 10arithmetic computation, ratio, percentage and multistep calculations permeates quantitative chemistry (1a, 1c and 1d)
- UK-GCSE-SCIENCE-CHEM-CA-04-05General Certificate of Secondary Education (GCSE) · Science · Year 11 (GCSE) · Grade 10convert units where appropriate particularly from mass to moles (1c)
Curriculum Framework
10th Grade · Science · UK GCSE
1
7 lessons
Significant Figures and Scientific Notation in Chemistry
Apply rules for significant figures, decimal places, rounding, and standard form to chemical calculations and experimental measurements.
2
7 lessons
Rearranging Equations in Quantitative Chemistry
Change the subject of mathematical equations used throughout GCSE Chemistry, including mole, concentration, gas volume, and energy formulae.
3
7 lessons
Unit Conversions and Mass-Mole Relationships
Convert units between metric prefixes (mg, g, kg, tonnes) and fluid volumes (cm³, dm³, m³), and convert seamlessly between mass and amount in moles.
4
7 lessons
Avogadro's Constant and Particle Calculations
Calculate numbers of atoms, molecules, and ions using the Avogadro constant and standard form notation.
5
7 lessons
Ratios, Percentages, and Empirical Formulae
Apply ratios, percentages, and arithmetic computations to determine percentage composition, empirical formulae, percentage yield, and atom economy.
6
7 lessons
Multistep Stoichiometry and Solution Calculations
Execute complex multistep quantitative calculations linking mass, moles, solution volume, gas volume, and limiting reactants.
7
7 lessons
Interpreting Analytical Charts and Spectroscopy
Interpret charts and spectra, including flame emission spectroscopy, gas chromatography, and instrumental analysis data to identify elements and compounds.