Skip to content

Log in Sign up free

Loading…

Home
Subjects
Past papers
Key terms
Pricing

My courses

Select your courses

Loading…

Subjects

Biology
Business
Chemistry
Citizenship Studies
Classics
Combined Science
Computer Science
Design and Technology
English Language
English Literature
Film Studies
Food Preparation and Nutrition
Geography
History
Mathematics
Media Studies
Physical Education
Physics
Psychology
Religious Studies
Sociology
Statistics

Resources

Browse courses
Past papers
Key terms & definitions
Pricing

About

Sign up
Log in
Privacy Policy
Terms of Service

© 2026 GradeGen

Not affiliated with any exam board.

Home
Chemistry
OCR GCSE Chemistry B
Chemical analysis

OCR GCSE Chemistry B · J258 · Chapter C5

Chemical analysis

All papers · 38 notes

Understand methods for analysing chemicals for quality control and component identification.

C5.1 Separation and purity

Formulations
Purity definition
Melting point and purity
Chromatography phases
Interpreting chromatograms
Chromatographic methods
Separation processes
Suggesting purification techniques

C5.2 Composition analysis

Sampling
Flame tests interpretation
Flame tests technique
Tests for cations and anions
Emission spectroscopy
Advantages of instrumental methods
Interpreting charts

C5.3 Stoichiometry calculations

Conservation of mass
Mass changes in non-enclosed systems
Relative formula masses
Avogadro constant and the mole
Mass to moles relationship
Stoichiometry and limiting reactants
Calculations from equations
Arithmetic computation
Standard form calculations
Changing subject of equation
Theoretical mass
Percentage yield
Reasons for low yield
Molar gas volume

C5.4 Solution measurements

Qualitative vs quantitative analysis
Concentration in g/dm³
Molar concentration
Neutralisation
Ions in acids and alkalis
Neutralisation reaction
Titration procedure
Titration data quality
Titration calculations

Practise with past papers Key terms & definitions