| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| periodic table pdf download free | 1.91 | 0.4 | 6039 | 45 |
| periodic table printable pdf free download | 1.49 | 0.4 | 3160 | 33 |
| periodic table of elements pdf free download | 0.42 | 0.1 | 1188 | 29 |
| periodic table worksheets pdf free download | 1.56 | 0.2 | 4810 | 13 |
| periodic table pdf color free download | 1.19 | 0.7 | 8985 | 16 |
