| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| periodicity a level chemistry | 1.39 | 0.7 | 9135 | 85 | 29 |
| periodicity | 1.37 | 0.4 | 1234 | 85 | 11 |
| a | 1.86 | 0.4 | 4286 | 38 | 1 |
| level | 1.13 | 0.6 | 4440 | 46 | 5 |
| chemistry | 0.98 | 0.6 | 759 | 94 | 9 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| periodicity a level chemistry | 1.9 | 0.2 | 7668 | 58 |
