Work through the list without notes. If you cannot do a statement, follow its link, then come back. Guide = study guide; Practice = practice questions.
Understanding
- I can define a Brønsted-Lowry acid as a proton donor and a Brønsted-Lowry base as a proton acceptor. (Guide: “Acids and bases as proton donors and acceptors”)
- I can explain why a base does not need to contain OH⁻, giving an example. (Guide: Common misconceptions)
- I can explain, using lone pairs and polar O–H bonds, why water can act as an acid or a base. (Guide: “Water: an acid or a base”; Practice Q4(c))
- I can explain the difference between a strong and a weak acid in terms of how fully it ionises in water. (Guide: “Strong and weak acids”; Practice Q6(a))
Skills
- I can write the conjugate acid and conjugate base of a species with the correct charge. (Practice Q1, Q5(a))
- I can label the acid, base, conjugate acid and conjugate base in a proton-transfer equation. (Guide: Worked example 1; Practice Q2, Q4)
- I can write equations showing an amphiprotic species acting as an acid and as a base. (Guide: Worked example 2; Practice Q5)
- I can read a particle model of an acid solution and work out the percentage of acid that has ionised. (Guide: Worked example 3; Practice Q3, Q6)
Reasoning
- I can use “the stronger the acid, the weaker its conjugate base” to compare two anions as bases. (Practice Q3, Q6(d))
- I can evaluate a claim about whether an anion makes a solution basic. (Practice Q7)
- I can explain why equal concentrations of two acids can give different H₃O⁺ concentrations. (Guide: Worked example 3(d); Practice Q3)
All ticked? Move on to Topic 4.9, Oxidation-Reduction (Redox) Reactions, or return to the course roadmap.