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Combined Science
OCR GCSE Combined Science A
Elements, Compounds, and Mixtures
OCR GCSE Combined Science A · J250 · Topic C2
Elements, Compounds, and Mixtures
Paper 3
· 26 notes
Understand the chemical distinction between pure substances (elements and compounds) and impure substances (mixtures).
C2.1
Purity and Separating Mixtures
C2.1a
Substance Purity
C2.1b
Melting Point Data
C2.1c
Relative Formula Mass
C2.1d
Empirical Formulas
C2.1e
Formulations and Alloys
C2.1f
Separation Processes
C2.1g
Chromatography Techniques
C2.1h
Chromatography Phases
C2.1i
Interpreting Chromatograms
C2.1j
Selecting Purification Techniques
C2.1k
Chromatography for Purity Testing
C2.2
Chemical Bonding
C2.2a
Metals and Non-Metals
C2.2b
Atomic Structure and Periodic Position
C2.2c
Electron Arrangement and Atomic Number
C2.2d
Nature and Arrangement of Chemical Bonds
C2.2e
Electrostatic Forces and Electron Transfer
C2.2f
Dot and Cross Diagrams
C2.2g
Limitations of Chemical Models
C2.2h
Reactions and Electron Arrangement
C2.2i
Development of the Periodic Table
C2.3
Properties of Materials
C2.3a
Covalent Bonds of Carbon
C2.3b
Diversity of Organic Compounds
C2.3c
Carbon Allotropes
C2.3d
Energy Transfers and Changes of State
C2.3e
Predicting States of Substances
C2.3f
Bulk Properties of Materials
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