Acid-base chemistry written questions
Practise G3 Science Chemistry acids, bases and salts through written questions, with marking guidance for equations and chemical reasoning.
Learning goals
- Describe acids and alkalis by the ions they form in water and their effect on Universal Indicator
- Compare neutral, acidic and alkaline solutions by their relative H⁺ and OH⁻ ion concentrations
- Compare neutral, acidic and alkaline solutions by their colour in Universal Indicator
- Compare neutral, acidic and alkaline solutions using the pH scale
- Describe how acids react with metals, bases and carbonates to form salts
- Describe neutralisation as hydrogen ions reacting with hydroxide ions to form water, H⁺ + OH⁻ → H₂O
- Describe why soil pH must be controlled and how calcium hydroxide treats acidic soil
- Describe how bases react with acids and with ammonium salts
- Classify oxides as acidic, basic, amphoteric or neutral from whether the element is a metal or non-metal
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