Testing for anions and cations

Inorganic Chemistry and The Periodic Table

A 7 full lesson bundle covering the Edexcel AS Level Chemistry Chapter: **Inorganic Chemistry and The Periodic Table.** Suitable for the Edexcel Specification. **Lesson 1: Group 2 Elements and Compounds** 1. To state and explain the trend in first and second ionisation energies of group 2 elements and how this links to their reactivities 2. To construct equations for the redox reactions of the elements Mg to Ba in Group 2 with oxygen, chlorine and water 3. To construct equations for the reactions of the oxides of Group 2 elements with water and dilute acid, and their hydroxides with dilute acid 4. To know the trends in solubility of the hydroxides and sulfates of Group 2 elements **Lesson 2: Thermal Stability of Nitrates and Carbonates** 1. To understand the term thermal stability 2. To recall the trend in thermal stability in group 1 and 2 nitrates and carbonates 3. To explain the trend in thermal stability in terms of the size and charge of the cations involved **Lesson 3: Flame Tests of Group 1 and 2 Compounds** 1. To describe how to carry out a flame test 2. To recall the flame colours of group 1 and 2 cations during a flame test 3. To understand the formation of flame colours are due to electron transitions **Lesson 4: The Halogens: Properties and Reactivity** 1. To describe and explain the trend in boiling points of the halogens in terms of induced dipole-dipole interactions (London Forces) 2. To describe and explain the trend in reactivity of the halogens illustrated by their displacement reaction with other halide ions 3. To construct full and ionic equations of halogen-halide displacement reactions and to predict the colour changes of these reactions in aqueous and organic solutions **Lesson 5: Disproportionation Reactions** 1. To explain the term disproportionation 2. To explain how the reaction of chlorine with water, cold dilute sodium hydroxide and hot alkali are examples of disproportionation reactions 3. To review analogous disproportionation reactions **Lesson 6: Reactions of Halide Ions** 1. To state and explain the trend in reducing ability of halides ions 2. To describe experiments that illustrate the evidence of the trend in reducing ability of group 1 halides using concentrated sulfuric acid 3. To describe experiments to identify metal halides using silver ions 4. To describe the reaction of hydrogen halides with water and ammonia **Lesson 7: Testing for Anions and Cations** 1. To recall the reactions, including ionic equations for identifying carbonate ions, CO32-, hydrogencarbonate ions, HCO3– and sulfate ions, SO42- 2. To recall the reactions, including ionic equations for identifying ammonium ions, NH4+ 3. To review the reactions, including ionic equations where applicable, to test for halide ions and for Group 1 and 2 metals