| (a) Group 1 (alkali metals) – lithium, sodium and potassium (Content in blue is not required for Double Award Science) |
| 2.1 understand how the similarities in the reactions of these elements with water provide evidence for their recognition as a family of elements |
| 2.2 understand how the differences between the reactions of these elements with air and water provide evidence for the trend in reactivity in Group 1 |
| 2.3 use knowledge of trends in Group 1 to predict the properties of other alkali metals |
| 2.4C explain the trend in reactivity in Group 1 in terms of electronic configurations |
