| 1 | So there's one electron in each hydrogen atom. | |
| 2 | Now here are these two isolated hydrogen atoms. | |
| 3 | A molecule of water consists of two atoms of hydrogen and one atom of oxygen. | |
| 4 | We've got an electron from each of the hydrogens. | |
| 5 | These are chains or rings of carbons atoms surrounded by hydrogen atoms. |