| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| some gases like carbon dioxide and water | 1.85 | 0.3 | 7683 | 61 |
| what gases are in water | 1.8 | 1 | 8540 | 79 |
| what are water and carbon dioxide | 1.24 | 0.3 | 7835 | 85 |
| what are some gases | 1.91 | 0.1 | 8928 | 35 |
| what kind of gas is carbon dioxide | 0.03 | 0.7 | 9468 | 8 |
| carbon dioxide is a common gas | 1.08 | 0.8 | 1728 | 74 |
| what type of gas is carbon dioxide | 1.79 | 0.7 | 2999 | 84 |
| what gas is carbon dioxide | 1.84 | 0.6 | 9677 | 32 |
| is carbon dioxide gas | 1.47 | 0.7 | 865 | 20 |
| other gases in the air | 1.87 | 0.7 | 3752 | 49 |
| which two gases react to produce water | 1.34 | 0.9 | 1652 | 12 |
| gases that are heavier than water | 1.81 | 0.2 | 3553 | 19 |
| different kind of gases | 1.15 | 0.1 | 8306 | 28 |
| two examples of gases | 1.46 | 0.4 | 1788 | 30 |
| what kind of gas is co2 | 0.84 | 0.4 | 4240 | 72 |
| is co2 a basic gas | 1.75 | 0.7 | 1086 | 91 |
| what type of gas is co2 | 1.61 | 0.8 | 7649 | 100 |
