| An atom is mostly ____ with a tiny dense nucleus. |
adhesion |
| The temperature at which a solid turns into a liquid is its ____. |
halogen |
| The molecular attraction between dissimilar molecules is ____. |
melting point |
| There are about 28 grams in one ____. |
nitrogen |
| The air we breathe is about 78% ____ and 21% oxygen. |
nucleus |
| The lightest ____ is fluorine (F). |
ounce |
| Water is the ____ in all aqueous solutions. |
solvent |
| An atom's ____ contains protons and neutrons. |
space |
