Ionic Bonds | Covalent Bonds | |
Description | Bond between metal and nonmetal. The nonmetal attracts the electron, so it's like the metal donates its electron to it. | Bond between two nonmetals with similar electronegativities. Atoms share electrons in their outer orbitals. |
Polarity | High | Low |
Shape | No definite shape | Definite shape |
Melting Point | High | Low |
Boiling Point | High | Low |
State at Room Temperature | Solid | Liquid or Gas |
Examples | Sodium chloride (NaCl), Sulfuric Acid (H2SO4 ) | Methane (CH4), Hydrochloric acid (HCl) |
Chemical Species | Metal and nometal (remember hydrogen can act either way) | Two nonmetals |