Section 1: Principles of Chemistry
Solubility of a Solid in Water
Investigate the solubility of potassium chlorate(V) in water at a specific temperature.
Paper Chromatography of Inks
Investigate paper chromatography using food colourings or ink mixtures.
Formula of a Metal Oxide
Determine the empirical formula of a metal oxide by combustion (magnesium oxide) or reduction (copper oxide).
Electrolysis of Aqueous Solutions
Investigate the electrolysis of aqueous solutions using inert electrodes.
Section 2: Inorganic Chemistry
Percentage of Oxygen in Air
Determine the approximate percentage by volume of oxygen in air using heated copper turnings.
Acid-Metal Reactions
Investigate the reactions between dilute hydrochloric and sulfuric acids and metals.
Acid-Alkali Titration
Describe how to carry out an acid-alkali titration to determine the concentration of an alkali.
Preparation of Copper(II) Sulfate
Prepare a pure, dry sample of hydrated copper(II) sulfate crystals starting from copper(II) oxide and sulfuric acid.
Preparation of Lead(II) Sulfate
Prepare a sample of pure, dry lead(II) sulfate starting from lead(II) nitrate and sodium sulfate.
Section 3: Physical Chemistry
Calorimetry and Temperature Changes
Investigate the temperature changes accompanying salts dissolving, neutralisation, displacement, and combustion.
Rate of Reaction using Marble Chips
Investigate the effect of changing the surface area of marble chips and the concentration of acid on the rate of reaction.
Catalytic Decomposition of Hydrogen Peroxide
Investigate the effect of different metal oxide catalysts on the decomposition of hydrogen peroxide.