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Chemistry
OCR GCSE Chemistry A
Elements, compounds and mixtures
OCR GCSE Chemistry A · J248 · Topic C2
Elements, compounds and mixtures
Paper 1 (Foundation)
or
Paper 3 (Higher)
· 48 notes
Distinguish between pure substances (elements and compounds) and impure substances (mixtures).
Identify chemically pure substances using melting point data.
Understand the importance of mixtures in useful materials.
Apply various separation methods including filtration, crystallisation, distillation, and chromatography.
C2.1
Purity and separating mixtures
CM2.1i
Quantitative Calculations
CM2.1ii
Significant Figures
CM2.1iii
Rearranging Equations
CM2.1iv
Empirical Formulae Calculations
C2.1a
Defining Purity
C2.1b
Melting Point Analysis
C2.1c
Relative Formula Mass
C2.1d
Deducing Empirical Formulae
C2.1e
Formulations and Mixtures
C2.1f
Separation Techniques
C2.1g
Chromatography Techniques
C2.1h
Phases in Chromatography
C2.1i
Interpreting Chromatograms
C2.1j
Selecting Purification Methods
C2.1k
Chromatography Applications
C2.2
Bonding
CM2.2i
Scale Estimation
CM2.2ii
Structural Representations
CM2.2iii
Data Translation
C2.2a
Metals vs Non-Metals
C2.2b
Structure and Periodic Position
C2.2c
Electronic Structure and Periodicity
C2.2d
Bonding Types and Structures
5 notes
Ionic Bonding and Structures
Simple Molecular Substances
Giant Covalent Structures
Structure and Bonding of Polymers
Metallic Bonding and Structures
C2.2e
Electrostatics in Bonding
C2.2f
Dot and Cross Diagrams
C2.2g
Model Limitations
C2.2h
Reactivity and Electronic Structure
C2.2i
Development of the Periodic Table
C2.3
Properties of materials
CM2.3i
3D Chemical Representations
CM2.3ii
Atomic Scale Relations
CM2.3iii
Scale Estimation
CM2.3iv
Standard Form with Nanoparticles
CM2.3v
Ratios in Surface Area
CM2.3vi
Calculating Geometry
C2.3a
Carbon Bonding
C2.3b
Carbon Compounds Diversity
C2.3c
Carbon Allotropes
C2.3d
State Changes and Bonding Forces
C2.3e
Predicting States of Matter
C2.3f
Bulk Properties of Materials
2 notes
Fundamentals of Bulk Properties
Bulk Properties of Chemical Structures
C2.3g
Nanoscale Dimensions
C2.3h
Surface Area to Volume Ratio
C2.3i
Properties and Uses of Nanoparticles
C2.3j
Risks of Nanoparticles
Practise with past papers
Key terms & definitions
