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Chemistry A
Chemical reactions
OCR
J248
Chemical reactions
Interpret chemical equations as symbolic representations of chemical changes.
Understand the principle of conservation of mass in reactions.
Model reactions as the rearrangement of atoms.
Apply the concept of the mole and the Avogadro constant to measure substance amounts.
Introducing chemical reactions
Write formulae and balanced chemical equations.
Use the mole concept and Avogadro constant for calculations.
Explain conservation of mass and observations in non-enclosed systems.
Perform stoichiometric calculations.
16 Subtopics
1
Quantitative Arithmetic
Revise
2
Standard Form with Avogadro
Revise
3
Significant Figures
Revise
4
Unit Conversions
Revise
5
Chemical Formulae
Revise
6
Writing Balanced Equations
Revise
7
Periodic Table Formulae
Revise
8
Deducing Compound Formulae
Revise
9
Ionic Equations
Revise
10
State Symbols
Revise
11
The Avogadro Constant and the Mole
Revise
12
Mass and Moles Relationship
Revise
13
Law of Conservation of Mass
Revise
14
Mass Changes in Reactions
Revise
15
Stoichiometry and Limiting Reactants
Revise
16
Calculating Masses from Equations
Revise
Energetics
Interpret and calculate energy changes in chemical reactions.
Model reactions using bond breaking and making processes.
6 Subtopics
1
Interpreting Reaction Charts
Revise
2
Energy Calculations
Revise
3
Exothermic and Endothermic Reactions
Revise
4
Reaction Profiles
Revise
5
Activation Energy
Revise
6
Bond Energy Calculations
Revise
Types of chemical reactions
Classify chemical reactions based on atomic and molecular changes.
Understand reduction, oxidation, and neutralisation reactions.
12 Subtopics
1
Quantitative Calculations
Revise
2
Redox: Oxygen Transfer
Revise
3
Redox: Electron Transfer
Revise
4
Acids and Alkalis Ions
Revise
5
Neutralisation Reactions
Revise
6
Ionic Neutralisation
Revise
7
Reactions with Acids
Revise
8
Acid Strength and Concentration
Revise
9
pH Scale
Revise
10
Hydrogen Ions and pH
Revise
11
Logarithmic pH Scale
Revise
12
Measuring pH
Revise
Electrolysis
Explain the decomposition of liquids during electrical conduction.
Explore electrolysis of molten ionic liquids and aqueous ionic solutions.
6 Subtopics
1
Quantitative Electrolysis
Revise
2
Electrode Products
Revise
3
Molten Electrolysis Products
Revise
4
Aqueous Electrolysis Products
Revise
5
Electrode Reactions
Revise
6
Electrolysis Techniques
Revise
