| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| is ozone a naturally occurring substance | 1.68 | 0.6 | 8048 | 14 |
| is ozone a pure substance | 1.28 | 0.5 | 1131 | 80 |
| is ozone a chemical | 0.8 | 0.2 | 535 | 58 |
| is ozone a mixture or pure substance | 0.41 | 0.4 | 6772 | 81 |
| is ozone a organic compound | 1.71 | 1 | 3262 | 53 |
| where is ozone created naturally | 0.73 | 0.9 | 2052 | 8 |
| is ozone a compound | 1.39 | 0.9 | 4666 | 6 |
| is ozone natural or man made | 1.49 | 0.8 | 53 | 36 |
| ozone is found in | 0.34 | 0.3 | 7229 | 86 |
| is ozone a molecule | 1.02 | 0.5 | 4020 | 4 |
| ozone is present in | 1.91 | 0.8 | 8458 | 53 |
| what does ozone come from | 1.41 | 1 | 3369 | 2 |
| where is natural ozone found | 0.32 | 0.6 | 2547 | 98 |
| what is ozone mainly produced from | 1.33 | 0.9 | 2333 | 7 |
| is ozone organic or inorganic compound | 1.86 | 0.7 | 407 | 63 |
| what is the form of ozone | 0.19 | 0.9 | 1535 | 31 |
| what is the nature of ozone | 1.97 | 1 | 1942 | 56 |
| ozone is made up of | 1.76 | 1 | 6559 | 80 |
