Acid-Base Chemistry structured questions · SEC G3 Combined Science Chemistry component

Learning objectives

• describe the meanings of the terms acid and alkali in terms of the ions they produce in aqueous solution and their effects on Universal Indicator
• describe neutrality and relative acidity and alkalinity, in terms of — relative H+ and OH– ion concentrations,
• describe neutrality and relative acidity and alkalinity, in terms of — colour in Universal Indicator, and
• describe neutrality and relative acidity and alkalinity, in terms of — the pH scale (calculation of pH from hydrogen ion concentration is not required)
• describe the characteristic properties of acids as in reactions with metals, bases and carbonates to form salts (description of the preparation of pure salts is not required)
• describe the reaction between hydrogen ions and hydroxide ions to produce water, H+ + OH– → H2O, as neutralisation
• describe the importance of controlling the pH in soils and how excess acidity can be treated using calcium hydroxide
• describe the characteristic properties of bases in reactions with acids and with ammonium salts
• classify oxides as acidic, basic, amphoteric or neutral based on metallic/non-metallic character.