| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| is methane lighter than air | 0.56 | 0.6 | 1333 | 81 |
| is methane lighter than air or heavier | 1.19 | 0.7 | 1656 | 94 |
| methane gas lighter than air | 0.74 | 0.8 | 2752 | 83 |
| is methane gas heavier or lighter than air | 0.62 | 0.8 | 9883 | 1 |
| is methane lighter or heavier than oxygen | 1.28 | 0.3 | 8437 | 56 |
| is methane gas heavier than air | 1.9 | 1 | 9593 | 42 |
| methane heavier than air | 1.77 | 0.5 | 263 | 90 |
| is methane gas lighter than air | 0.86 | 0.1 | 525 | 40 |
| methane lighter than air | 0.25 | 0.9 | 7779 | 35 |
| is methane less dense than air | 0.9 | 0.1 | 3748 | 75 |
| is methane lighter than water | 0.4 | 0.3 | 7454 | 94 |
| is methane denser than air | 0.61 | 1 | 8743 | 32 |
| is methane heavier than oxygen | 1.52 | 1 | 8573 | 9 |
| is ethane lighter than air | 1.91 | 0.5 | 6815 | 76 |
| methane weight vs air | 1.63 | 0.6 | 724 | 71 |
| methane density compared to air | 1.19 | 0.6 | 3309 | 66 |
| methane density vs air | 1.63 | 0.1 | 9931 | 85 |
