| A | B |
| Gulf Stream | A warm current of water that travels from the gulf of mexico to London. |
| Electrons | found in energy levels and have a negative charge. |
| Protron | found in nucleus, and has a positive charge |
| Neutron | has a neutral charge, and is found in the nucleus |
| chemical bond | the force holding two atoms or ions together |
| ionic bond | the force of attraction between oppositely charged ions |
| matter | anything that takes up space and has weight. |
| covalent bond | When two atoms share one or more electrons |
| 1-15 | The PH scale runs from |
| Acidic | A PH below 7 is considered |