GCSE Chemistry
Quantitative chemistry
revision.
Play this section Conservation of mass, relative formula mass, moles, concentration, yield and atom economy.
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Students type: percentage yield vs atom economy GCSE Chemistry
Open guide Revision guideConcentrationStudents type: concentration mol/dm3 GCSE Chemistry
Open guide Revision guideConservation of massStudents type: conservation of mass GCSE Chemistry
Open guide Revision guideMolesStudents type: moles = mass / Mr GCSE Chemistry
Open guide Revision guideChemical calculationsStudents type: moles = mass / Mr GCSE
Open guideChemical calculations
Relative formula mass, conservation of mass, moles, concentration, limiting reactants, percentage yield and atom economy.
Moles
GCSE Chemistry revision on moles: n = m / Mᵣ, Avogadro’s constant, mole ratios from balanced equations, and a full worked mass-to-mass calculation.
Conservation of mass
GCSE Chemistry revision on conservation of mass: atoms rearranged not created, closed versus open systems, and why a flask can lose mass when a gas escapes.
Concentration
GCSE Chemistry revision on concentration: mol/dm³ and g/dm³, converting cm³ to dm³, dilution, and using concentration in titration calculations.
Atom economy and yield
GCSE Chemistry revision on atom economy and percentage yield: two different formulae, why they are not the same, and why industry wants both high yield and high atom economy.
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More GCSE Chemistry
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Teacher-written GCSE Chemistry revision for Combined and Triple Science: atomic structure, bonding, the periodic table, acids, electrolysis, rates, organic chemistry, calculations and the atmosphere.
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