U3 Lesson 1B Check for Understanding
Bond Properties
| PROPERTY | COVALENT | IONIC | METALLIC | |
|---|---|---|---|---|
| NONPOLAR | POLAR | |||
| EXAMPLES | H2 | H2O | LI2O | LiNa |
| TYPE OF ATOMS | Nonmetal + Nonmetal | Nonmetal + Nonmetal | Metal + Nonmetal | Metal + Metal |
| ELECTRONEGATIVITY RANGE | 0-0.4 | .41 - 1.69 | > 1.70 | --------- |
| NATURE OF BOND (transfers electrons, shares electrons equally, shares electrons unequally. Sea of electrons) | shares electrons equally | shares electrons unequally | transfers electrons | sea of electrons |
| STRENGTH OF INTERmolecular Forces (very high, high, low, very low) MELTING/BOILING POINTS (very high, high, low, very low) | very low | low | very high | high |
| ELECTRICAL CONDUCTIVITY | None | None (exception: acids & bases) | only when disolved in water, aqueous form, or when melted | in both solid and liquid state |
| SOLUBILITY IN H2O (Like Dissolves Like) | No - Insoluble | Yes - dissolves | Yes- dissolves | No - Insoluble |
| STRUCTURE | seperate discrete molecules | seperate discrete molecules | crystalline lattice | sea of electrons |