Level 5 · Science S5.7

Acids, redox and the periodic table

Acids, electron transfer and patterns in the periodic table explain a great deal of chemistry.

Planned. This book is not written yet. Below is its plan, which a teacher can already use.

You are ready for this book if

You can write a balanced equation for an acid reacting with an alkali.

The plan

  1. S5.7.1 Acids and bases
    • Define acids and bases as proton donors and acceptors
    • Identify conjugate acid and base pairs
  2. S5.7.2 pH calculations
    • Calculate pH for strong acids, strong bases and weak acids
    • Use Kw and Ka in calculations
  3. S5.7.3 Buffers and titration curves
    • Explain how a buffer resists changes in pH
    • Choose an indicator from a titration curve
  4. S5.7.4 Redox and oxidation states
    • Assign oxidation states and identify what is oxidised and reduced
    • Write half equations and combine them
  5. S5.7.5 Electrode potentials and cells
    • Calculate cell voltage from standard electrode potentials
    • Explain how batteries and fuel cells work
  6. S5.7.6 Periodicity
    • Explain trends in radius, ionisation energy and melting point across period 3
    • Describe how period 3 elements and their oxides react with water
  7. S5.7.7 Group 2 and the halogens
    • Explain trends in reactivity down group 2 and group 7
    • Use tests to identify halide ions
  8. S5.7.8 Transition metals
    • Explain colour, variable oxidation states and catalysis in transition metals
    • Describe ligand substitution in complex ions

For parents and teachers

Level 5 fits learners who can already: read a textbook. use functions and graphs. In many schools that is about 17 to 20, but start wherever the learner is.

Strand: Matter. Written and drawn by attnom. Free to read, print and share.