| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| what makes a substance radioactive | 0.4 | 0.5 | 5310 | 64 | 34 |
| what | 0.36 | 0.8 | 6226 | 14 | 4 |
| makes | 1.62 | 0.2 | 6357 | 28 | 5 |
| a | 0.47 | 0.4 | 2363 | 51 | 1 |
| substance | 0.78 | 0.7 | 2088 | 66 | 9 |
| radioactive | 1.68 | 0.6 | 7701 | 54 | 11 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| what makes a substance radioactive | 0.31 | 0.2 | 1195 | 21 |
| what is a radioactive substance | 0.8 | 0.7 | 8318 | 11 |
| how does a substance become radioactive | 0.66 | 0.9 | 145 | 3 |
| what makes something radioactive | 1.98 | 0.7 | 1709 | 74 |
| what makes an element radioactive | 0.12 | 0.3 | 7224 | 65 |
| what makes radioactive atom radioactive | 1.62 | 0.8 | 3993 | 78 |
| what makes things radioactive | 0.81 | 0.4 | 7653 | 12 |
| radioactive form of a substance | 1.98 | 0.5 | 4728 | 28 |
| what makes a compound radioactive | 0.76 | 0.9 | 9064 | 20 |
| what makes a material radioactive | 0.77 | 0.1 | 2960 | 88 |
| what makes atoms radioactive | 1.45 | 0.9 | 9155 | 56 |
| a radioactive substance emits | 1.16 | 1 | 4931 | 38 |
| what causes an element to be radioactive | 0.26 | 0.5 | 692 | 22 |
| where is the radioactive substance produced | 0.41 | 0.1 | 6584 | 15 |
| what causes something to be radioactive | 0.33 | 0.9 | 1339 | 100 |
