Appendix


 * Name and formula of common positive ions **


 * Name and formula of common negative ions **


 * Colour of selected ions in aqueous solution **


 * Appearance of common elements and solutions **


 * Appearance of common compounds and solutions **


 * Physical constants **


 * Relating common units **


 * SI prefixes **


 * Solubility rules **


 * Colour and formula of common precipitates **