7.1 The characteristic properties of acids and bases
- Syllabus
- 0620–2026–2027
- Topic
- 7.1
- Level
- —
7.1.1—Characteristic properties of acids in
- Describe characteristic properties of acids in terms of their reactions with: (a) metals (b) bases (c) carbonates
7.1.2—Acids in terms of their effect on: (a)
- Describe acids in terms of their effect on: (a) litmus (b) thymolphthalein (c) methyl orange
7.1.3—Bases are oxides or hydroxides of
- State: bases are oxides or hydroxides of metals and that alkalis are soluble bases
7.1.4—Characteristic properties of bases in
- Describe characteristic properties of bases in terms of their reactions with: (a) acids (b) ammonium salts
7.1.5—Alkalis in terms of their effect on
- Describe alkalis in terms of their effect on: (a) litmus (b) thymolphthalein (c) methyl orange
7.1.6—Aqueous solutions of acids contain H+
- State: aqueous solutions of acids contain H+ ions and aqueous solutions of alkalis contain OH– ions
7.1.7—To compare hydrogen ion concentration
- Describe how to compare hydrogen ion concentration, neutrality, relative acidity and relative alkalinity in terms of colour and pH using universal indicator paper
7.1.8—Neutralisation reaction between an
- Describe neutralisation reaction between an acid and an alkali to produce water, H+ (aq) + OH– (aq) → H2O (l)
7.1.9—Acids as proton donors and bases as
- Define acids as proton donors and bases as proton acceptors
7.1.10—Strong acid as an acid that is
- Define a strong acid as an acid that is completely dissociated in aqueous solution and a weak acid as an acid that is partially dissociated in aqueous solution
7.1.11—Hydrochloric acid is a strong acid, as
- State: hydrochloric acid is a strong acid, as shown by the symbol equation, HCl (aq) → H+(aq) + Cl –(aq)
7.1.12—Ethanoic acid is a weak acid, as shown
- State: ethanoic acid is a weak acid, as shown by the symbol equation, CH3COOH(aq) ⇌ H+(aq) + CH3COO–(aq)
Objective notes
12 learning objectivesConceptIGCSE Chemistry